Searchable registry of 451 NLP datasets for entity recognition, coreference, and relation extraction
| Name | Description | Category | Language | Format | Entity Types | URL |
|---|---|---|---|---|---|---|
| 18th Century NER | Named entities in 18th century English text. Historical OCR challenges. | ner | en | CoNLL | PER, LOC, ORG, DATE | Link |
| 2M-NER | Multilingual Multimodal NER. Four languages with text-image pairs. | ner | mul | JSONL | PER, LOC, ORG, MISC | Link |
| 500 Tutoring Sessions | 32k utterances from elementary algebra/physics tutoring. Mode identification. | ner | en | Custom | Student, Tutor, Concept, Problem | Link |
| ACE 2004 | Nested entity recognition benchmark. Influential early corpus for nested NER research. | ner | en | XML | PER, ORG, GPE, LOC, FAC... | N/A |
| ACE 2005 | Automatic Content Extraction 2005. Nested NER + relations + events. | ner | en | XML | PER, ORG, GPE, LOC, FAC... | N/A |
| ACE 2005 RE | ACE 2005 relation extraction component. 7 entity types, 6 relation types with subtypes. | ner | en | XML | PER, ORG, GPE, LOC, FAC... | N/A |
| ACORD | Expert-annotated clause retrieval for contract drafting. 114 queries, 126k+ pairs. | ner | en | JSONL | Clause, Party, Obligation, Condition | Link |
| ADR Discontinuous | Adverse Drug Reaction corpus with discontinuous mentions. Patient forum posts. | ner | en | BRAT | ADR, DRUG, SYMPTOM | Link |
| AG News | News article topic classification. 4 classes: World, Sports, Business, Sci/Tech. | ner | en | HuggingFace | World, Sports, Business, Sci/Tech | Link |
| AGRONER | Unsupervised agricultural NER. Six major agricultural entity types. | ner | en | BIO | Disease, Soil, Pathogen, Pesticide, Crop... | Link |
| AIDA-CoNLL | Primary entity linking benchmark linking CoNLL-2003 mentions to Wikipedia. De-facto standard for end | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| AIDA-CoNLL (v2) | Entity linking to Wikipedia. CoNLL-YAGO dataset for named entity disambiguation. | entity_linking | en | CoNLL | PER, LOC, ORG, MISC | Link |
| AIONER | All-in-one biomedical NER. Unified biomedical entity extraction model. | ner | en | JSONL | Gene, Disease, Chemical, Species | Link |
| AISHELL-NER | Chinese speech NER from AISHELL corpus. Named entities in Mandarin speech. | ner | zh | Custom | PER, LOC, ORG | Link |
| AMI Meeting | Meeting transcripts with coreference and dialogue act annotation. | coref | en | XML | PER, ORG, LOC | Link |
| AQUAINT | Newswire entity linking dataset from AQUAINT corpus. Wikipedia-linked mentions. | entity_linking | en | Custom | PER, LOC, ORG | N/A |
| ARF (Artificial Relationships in Fiction) | Synthetic RE dataset for literary texts. GPT-4o generated annotations. | relation_extraction | en | JSONL | Character, Location, Object, Event | Link |
| ARRAU 3.0 | Anaphora Resolution and Underspecification corpus version 3. Multi-genre with rich annotation. | coref | en | MMAX2 | PER, ORG, LOC, Event | Link |
| ARRAU 3.0 (v2) | Multi-genre anaphoric annotation: identity, bridging, discourse deixis, split antecedents. | coref | en | MMAX2 | PER, LOC, ORG, EVENT | N/A |
| ARRAU GENIA | ARRAU corpus GENIA portion. Biomedical coreference. | coref | en | MMAX2 | Gene, Protein, Cell | Link |
| ARRAU Pear Stories | ARRAU Pear Stories portion. Narrative coreference. | coref | en | MMAX2 | PER, LOC, ORG | Link |
| ARRAU RST | ARRAU RST-DT portion. Discourse-annotated Wall Street Journal. | coref | en | MMAX2 | PER, LOC, ORG | Link |
| ARRAU Trains | ARRAU Trains portion. Task-oriented dialogue coreference. | coref | en | MMAX2 | PER, LOC, TIME | Link |
| ASN | Atomic Slot Number dataset. Slot filling benchmark. | relation_extraction | en | Custom | Organization, Person, Date | Link |
| ATIS Flight Booking | Slot-filling NER for flight booking intents. Classic NLU benchmark. | ner | en | BIO | FromCity, ToCity, DepartDate, ReturnDate, Airline... | Link |
| Aerospace NER Dataset | First open-source aerospace NER. 5 entity types for aviation knowledge graphs. | ner | en | CoNLL | Aircraft, Component, Manufacturer, Mission, System | Link |
| AfriQA | Cross-lingual QA for 10 African languages. Wikipedia-based. | multilingual | mul | JSONL | Link | |
| AfriSenti | Sentiment analysis for 14 African languages. 110k+ tweets. SemEval 2023 Task 12. | multilingual | mul | HuggingFace | positive, neutral, negative | Link |
| AgCNER | Large-scale Chinese agricultural NER. 66k samples, ~207k entities, 3.9M characters. | ner | zh | JSONL | CROP, DISEASE, PEST, CHEMICAL, VARIETY... | Link |
| AgMNER | Chinese multimodal agricultural NER. Text and speech combined. | ner | zh | JSONL | Crop, Disease, Pest, Method | Link |
| AgriNER | Agricultural knowledge graph construction. 36 entity types, 9 relation types. | ner | en | JSONL | Crop, Disease, Soil, Pathogen, Pesticide... | Link |
| Akkadian Cuneiform Dataset | Unicode cuneiform with transliteration. Old/Middle Babylonian, Neo-Assyrian. | ner | akk | Custom | Person, Place, God, Object | Link |
| Akkadian UD | Universal Dependencies for Akkadian. Cuneiform texts from ancient Mesopotamia. | historical | akk | CoNLLU | PER, LOC, GPE | Link |
| AmericasNLI | NLI for 10 Indigenous American languages (Quechua, Guaraní, Nahuatl, etc.). | indigenous | mul | TSV | Link | |
| AnEM | Anatomical entity mentions corpus. Anatomy terms in biomedical text. | ner | en | Standoff | AnatomicalStructure, Organ, Tissue, Cell, OrganismSubdivision | Link |
| Anaphora Accessibility | Discourse anaphora accessibility evaluation. Tests non-NP antecedents. | coref | en | JSONL | DISCOURSE_DEIXIS, EVENT_ANAPHORA, CLAUSAL_ANTECEDENT | N/A |
| AnatEM | Anatomical entity mention corpus. 1,212 PubMed abstracts with anatomical structures. | ner | en | Standoff | Anatomy | Link |
| Ancient Greek UD | Universal Dependencies for Ancient Greek. Homeric through Byzantine. | ner | grc | CoNLLU | PER, LOC, ORG | Link |
| Ancient Hebrew UD | Universal Dependencies for Biblical Hebrew. Hebrew Bible text. | historical | hbo | CoNLLU | PER, LOC, GPE | Link |
| Anime/Manga NER | Anime and manga entities. Titles, characters, studios, genres. | ner | mul | JSONL | Title, Character, Studio, Genre, Author... | Link |
| AnnoCTR (Cyber Threat Reports) | Cyber threat intelligence NER with MITRE ATT&CK linking. 400 annotated documents from commercial CTI | ner | en | JSONL | ORGANIZATION, LOCATION, SECTOR, TIME, CODE... | Link |
| Antiques NER | Antiques entities. Periods, styles, materials, makers. | ner | en | JSONL | Period, Style, Material, Maker, Provenance... | Link |
| Arabic Event Coreference | Arabic event coreference. Underexplored language for event coref. | coref | ar | CoNLL | Event, Time, Location, Participant | Link |
| AstroNER | Astronomy named entity recognition. Celestial objects and astronomical concepts. | ner | en | CoNLL | CelestialObject, Instrument, Mission, Phenomenon | Link |
| Astrology NER | Astrological entities. Signs, planets, houses, aspects. | ner | en | CoNLL | Sign, Planet, House, Aspect, Transit... | Link |
| Astronomical Telegram KEE | Event IDs, object names, telescope names from GCN Circulars. | ner | en | JSONL | EventID, ObjectName, TelescopeName, Observatory | Link |
| Automotive NER | Vehicle and automotive entities. Makes, models, parts, specs. | ner | en | CoNLL | Make, Model, Part, Specification, Year... | Link |
| Aviation Products NER | Chinese aviation manufacturing corpus. Complex product entities. | ner | zh | BIO | Product, Component, Process, Material | Link |
| B2NERD | Billion-scale news NER dataset. Large-scale distantly supervised NER. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| BASHI | Bangla Shared Task on Information extraction. Bengali NER. | ner | bn | CoNLL | PER, LOC, ORG | Link |
| BBQ | Bias Benchmark for QA. Tests 9 social bias categories including sexual orientation. | bias_evaluation | en | JSONL | Link | |
| BC2GM | BioCreative II Gene Mention recognition. Gold-standard gene/protein name tagging. | ner | en | IOB2 | Gene, Protein | Link |
| BC2GM Full | Complete BioCreative II Gene Mention corpus. Extended from BC2GM. | ner | en | IOB2 | Gene, Protein | Link |
| BC4CHEMD | BioCreative IV Chemical Entity Mention Detection. Drug and chemical name recognition. | ner | en | IOB2 | Chemical | Link |
| BC5CDR | Biomedical NER for diseases and chemicals. Created for BioCreative V CDR task, a major biomedical NL | ner | en | BIO | Chemical, Disease | Link |
| BEANS-Zero | Bioacoustics benchmark beyond species classification. Natural-language prompts for animal sounds. | arcane_domain | en | Custom | SPECIES, CALL_TYPE, INDIVIDUAL | Link |
| BELB | Biomedical Entity Linking Benchmark unifying 11 corpora across 7 knowledge bases. Standardized biome | entity_linking | en | JSONL | Disease, Chemical, Gene, Species, CellLine... | Link |
| BOLD | Bias in Open-ended Language Generation Dataset. Wikipedia-based prompts. | bias_evaluation | en | JSONL | Link | |
| BOOKCOREF | Book-scale coreference. First benchmark with 200k+ tokens/doc average. Character coreference on 53 P | coref | en | JSONL | PER | Link |
| BOOKCOREF (Split) | BOOKCOREF split into 1500-token windows for comparison with standard benchmarks. | coref | en | JSONL | PER | Link |
| Basque NER | Named entity recognition for Basque (Euskara). Language isolate NER corpus. | ner | eu | CoNLL | PER, LOC, ORG, MISC | N/A |
| Beekeeping NER | Apiculture entities. Equipment, bee types, diseases, products. | ner | en | CoNLL | Equipment, BeeType, Disease, Product, Season... | Link |
| BiTimeBERT | Bi-directional temporal relation dataset. Event ordering and duration. | ner | en | JSONL | Event, Time | Link |
| BioMNER | Biomedical method NER. Scientific methods and techniques in biomedical text. | ner | en | BIO | Method, Technique, Protocol | Link |
| BioNER-LLaMA | Instruction-tuned biomedical NER benchmark. Evaluates generative models on disease/chemical/gene NER | ner | en | JSONL | Disease, Chemical, Gene | Link |
| BioRED | Document-level biomedical RE with novelty labels. BioCreative VIII shared task benchmark. | ner | en | Custom | Gene, Disease, Chemical, Species, Variant... | Link |
| Birdwatching NER | Birdwatching entities. Species, habitats, behaviors, locations. | ner | en | JSONL | Species, Family, Habitat, Behavior, Location... | Link |
| Board Game NER | Board game entities. Games, mechanics, components, designers. | ner | en | JSONL | Game, Mechanic, Component, Designer, Publisher... | Link |
| BookCoref (Bamman) | Full-novel coreference with automatic silver and manual gold annotations. Includes Animal Farm, Sidd | coref | en | JSONL | PER, LOC, ORG | Link |
| BookSum Coref | Coreference annotations on book chapters from BookSum. Long literary texts. | coref | en | JSONL | PER, LOC, ORG | Link |
| Brewing NER | Craft brewing entities. Ingredients, processes, styles, equipment. | ner | en | CoNLL | Ingredient, Process, Style, Equipment, ABV... | Link |
| Broad Twitter Corpus | Twitter NER across multiple time periods. Tests temporal robustness of NER systems. | ner | en | BIO | PER, LOC, ORG, MISC | Link |
| CADEC | Clinical Adverse Drug Events. Benchmark for discontinuous NER from AskaPatient. | ner | en | BRAT | ADR, Drug, Disease, Symptom | Link |
| CALCS | Computational Approaches to Linguistic Code-Switching. Multiple language pairs. | ner | mul | CoNLL | PER, LOC, ORG | Link |
| CALCS-2018 | Code-Switching Workshop shared task. English-Spanish Twitter NER with 9 entity types. | ner | mul | CoNLL | PER, LOC, ORG, GROUP, TITLE... | Link |
| CASIE | Cybersecurity event extraction. Attack patterns, vulnerabilities, malware events. | ner | en | Standoff | Attack-Pattern, Vulnerability, Data-Breach, Malware, Patch | Link |
| CBMA Charters | Burgundian medieval Latin charters NER. 9th-14th century diplomatic documents. | ner | la | CoNLL | PER, LOC, ORG, DATE, TITLE | N/A |
| CEREC | Chinese entity and relation extraction corpus. Web text and news. | ner | zh | JSONL | PER, LOC, ORG | Link |
| CHEMDNER | Chemical compound and drug name recognition in scientific text. | ner | en | BIO | CHEMICAL, DRUG, ABBREVIATION | Link |
| CHisIEC | Chinese Historical Information Extraction Corpus. Ancient Chinese NER + RE with 12 relation types. | ner | lzh | JSON | PER, LOC, OFI, BOOK | Link |
| CLEF Clinical Coreference | Clinical coreference from ShARe/CLEF eHealth. Patient records with coref. | coref | en | Standoff | Disorder, Drug, Procedure | N/A |
| CODI-CRAC | CODI/CRAC shared task on anaphora and coreference. Multiple languages. | coref | mul | CoNLL | PER, ORG, LOC, Event | Link |
| CODI-CRAC Bridging | Universal Anaphora bridging annotations. One of the largest bridging datasets. | coref | en | CoNLLUA | BRIDGING_REF | Link |
| CRAFT | Colorado Richly Annotated Full-Text. 97 PubMed articles with multi-layer annotation including corefe | coref | en | XML | GENE, PROTEIN, CHEMICAL, CELL, ORGANISM | Link |
| CRAFT Coreference | Colorado Richly Annotated Full-Text corpus coreference. Biomedical coref. | coref | en | Standoff | Gene, Protein, Cell, Organism | Link |
| CRAFT Corpus (Full Coref) | Biomedical coref with ~30k relations. 23% span 500-12k words. | coref | en | Standoff | Gene, Protein, Cell, Organism, Chemical | Link |
| CSN | Code Search Net. Programming language dataset for code understanding. | ner | mul | JSONL | Function, Class, Variable | Link |
| CUAD | Contract Understanding Atticus Dataset. 13k+ labels across 510 commercial contracts. | ner | en | JSONL | Party, Date, Amount, Clause, Jurisdiction | Link |
| Character Codex | Character entity recognition in fiction. Literary character identification. | ner | en | JSONL | Character, Alias, Role | Link |
| ChemDataExtractor | Chemical data extraction toolkit benchmark. Chemical NER and properties. | ner | en | Custom | Chemical, Property, Value, Unit | Link |
| Cherokee NER | Cherokee-English parallel corpus for NER transfer. Uses Syllabary script. | ner | chr | Custom | PER, LOC, ORG | N/A |
| Chess NER | Chess entities. Openings, players, tournaments, moves. | ner | en | JSONL | Opening, Player, Tournament, Move, ELO... | Link |
| Chinese Engineering Geology NER | Geological disasters NER with EDA-based augmentation for small samples. | ner | zh | BIO | Disaster, Location, Cause, Measure, Material | Link |
| Chinese Nested NER | Chinese nested named entity recognition. Multiple levels of embedded entities. | ner | zh | JSONL | PER, ORG, LOC, GPE | Link |
| Classical Chinese UD | Universal Dependencies for Classical/Literary Chinese. Pre-modern texts. | historical | lzh | CoNLLU | PER, LOC, GPE | Link |
| CoMTA | Student-GPT4 Khanmigo tutor dialogues for knowledge tracing. | ner | en | JSONL | Student, Tutor, Concept, Question, Response | Link |
| CoNLL-2002 | Spanish and Dutch NER from CoNLL 2002 shared task. Multi-language NER benchmark. | ner | mul | CoNLL | PER, LOC, ORG, MISC | N/A |
| CoNLL-2002 Dutch | Dutch portion of CoNLL-2002 NER shared task. Newspaper text. | ner | nl | CoNLL | PER, LOC, ORG, MISC | N/A |
| CoNLL-2002 Spanish | Spanish portion of CoNLL-2002 NER shared task. News articles. | ner | es | CoNLL | PER, LOC, ORG, MISC | N/A |
| CoNLL-2003 Sample | Classic news NER benchmark from Reuters Corpus. Foundational dataset that established modern NER eva | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| CoNLL04 RE | Sentence-level relation extraction from CoNLL-2004. Clean, small RE benchmark. | ner | en | CoNLL | PER, ORG, LOC, Other | Link |
| CoQA | Conversational QA across 7 domains: children's stories, literature, mid/high school exams, news, Wik | coref | en | JSONL | ANSWER_SPAN | Link |
| Cocktail NER | Cocktail entities. Ingredients, techniques, glassware, garnishes. | ner | en | CoNLL | Spirit, Mixer, Technique, Glassware, Garnish... | Link |
| CodeSearchNet | Code understanding benchmark. Function documentation and code search across 6 languages. | arcane_domain | mul | JSONL | FUNCTION, CLASS, VARIABLE, MODULE | Link |
| Construction NER | Construction industry entities. Materials, equipment, processes. | ner | en | BIO | Material, Equipment, Process, Measurement, Location | Link |
| Coptic Scriptorium | Sahidic Coptic with multi-layer annotation. ~50k tokens. | ner | cop | CoNLLU | PER, LOC, ORG | Link |
| Coptic UD | Universal Dependencies for Coptic. Late Egyptian language. | historical | cop | CoNLLU | PER, LOC, GPE | Link |
| CorefUD | Multilingual coreference (17 languages, 22 datasets). CRAC shared task standard. | coref | mul | CoNLLU | PER, LOC, ORG | Link |
| CovEReD | COVID-19 relation extraction dataset. Biomedical relations from pandemic literature. | relation_extraction | en | JSONL | Drug, Disease, Gene, Symptom | Link |
| Critical Role Dataset | Unscripted live D&D transcripts. Storytelling and dialogue analysis. | ner | en | Custom | Character, Location, Item | Link |
| Crop Disease NER | Crop disease identification. Symptoms, pathogens, treatments. | ner | en | BIO | Disease, Symptom, Pathogen, Treatment, Crop... | Link |
| CrossNER | Cross-domain NER across 5 domains: politics, science, music, literature, AI. Tests domain transfer. | ner | en | CoNLL | PER, ORG, LOC, MISC, Domain-specific | Link |
| CrossRE | Cross-domain relation extraction across 6 domains. Tests RE generalization. | relation_extraction | en | JSON | PER, ORG, LOC, MISC | Link |
| CrossWeigh | Cross-lingual adversarial NER evaluation. Tests multilingual model robustness. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| CrowS-Pairs | Crowdsourced stereotype pairs benchmark. 9 bias categories for language models. | bias_evaluation | en | CSV | Link | |
| Crypto NER | Cryptocurrency entities. Tokens, wallets, exchanges, protocols. | ner | en | CoNLL | Token, Wallet, Exchange, Protocol, Price... | Link |
| CyNER-APTNER | Unified cyber threat intelligence NER. Malware, threat actors, IOCs. | ner | en | CoNLL | Malware, ThreatActor, Vulnerability, Indicator, Tool | Link |
| D&D NER Benchmark | Fantasy NER from 7 D&D adventure books. LLM-annotated fantasy entities. | ner | en | CoNLL | Character, Location, Item, Creature, Spell... | Link |
| DBPedia-14 | Wikipedia article classification. 14 non-overlapping classes from DBpedia ontology. | ner | en | HuggingFace | Company, EducationalInstitution, Artist, Athlete, OfficeHolder... | Link |
| DELICATE | Depression, emotion, and linguistic analysis corpus. Mental health text. | ner | en | JSONL | Symptom, Treatment, Emotion | Link |
| DINAA | Digital Index of North American Archaeology. Geospatial heritage data. | ner | en | Custom | Site, Artifact, Culture, Period, Location | Link |
| DISAPERE | Discourse Structure in Peer Review Discussions. 20k sentences in 506 review-rebuttal pairs with argu | abstract_anaphora | en | JSONL | REVIEW_ARG, REBUTTAL_ARG, STANCE | Link |
| DISRPT 2025 | Cross-formalism benchmark for discourse segmentation, connective detection, and relation classificat | abstract_anaphora | mul | CoNLL | DISCOURSE_UNIT, CONNECTIVE, DISCOURSE_RELATION | Link |
| DROC | German novel coreference. 90 German novels from DTA (Deutsches Textarchiv). | coref | de | JSONL | PER | N/A |
| DeepFashion2 | Comprehensive fashion dataset. 491k images, 801k clothing items. | ner | en | JSONL | Category, Style, Color, Pattern, Landmark | Link |
| DialogRE | Dialogue-based relation extraction. Multi-turn conversations requiring entity tracking across turns. | relation_extraction | en | JSONL | PER, ORG, LOC | Link |
| Disco-Bench | Discourse-aware evaluation benchmark for language modeling. 9 document-level testsets covering cohes | abstract_anaphora | zh-en | Custom | N/A | |
| DiscoTrack | Multilingual LLM benchmark for discourse tracking. 12 languages, 4 levels: salience, entity tracking | coref | mul | Custom | SALIENT_ENTITY, TRACKED_ENTITY, BRIDGING_REF | N/A |
| Distant Listening Corpus | 1,283 musical scores with harmonic annotations. String quartet + piano music with Roman numeral anal | ner | mul | TSV | CHORD, KEY, MODULATION, CADENCE, PHRASE | Link |
| DocRED | Document-level relation extraction. 96 relation types from Wikipedia. | relation_extraction | en | JSONL | PER, LOC, ORG, TIME, NUM | Link |
| Dothraki | Dothraki language corpus. Game of Thrones constructed language. | constructed | dlk | Custom | PER, LOC | Link |
| DrugProt | Chemical-protein interactions from BioCreative VII challenge. | relation_extraction | en | BRAT | Chemical, Gene, Protein | Link |
| Dutch Archaeology NER | Archaeological excavation reports from DANS archive. 31k annotations across 6 entity types. | ner | nl | CoNLL | ARTEFACT, PERIOD, MATERIAL, LOCATION, SPECIES... | Link |
| Dutch Archaeology NER (v2) | Dutch archaeological excavation reports. DANS archive annotations. | ner | nl | Standoff | Site, Artifact, Period, Material | Link |
| E-NER (EDGAR-NER) | NER for US SEC EDGAR filings. 52 documents, 400k+ tokens with legal entities. | ner | en | CSV | PERSON, COURT, BUSINESS, GOVERNMENT, LOCATION... | Link |
| E-NER SEC | Legal NER from SEC EDGAR filings. 52 documents with financial entity annotations. | ner | en | CSV | ORG, LOC, DATE, MONEY, PERCENT... | Link |
| ECB+ | Event Coreference Bank Plus. Standard benchmark for cross-document event coreference resolution. | coref | en | Custom | EVENT, TIME, LOC, PARTICIPANT | Link |
| ECB+META | ECB+ with metaphoric paraphrases. ChatGPT-transformed sentences. | coref | en | EVENT, TIME, LOC, PARTICIPANT | N/A | |
| EFGC | Cooking coreference segmented by tools, foods, and actions. | coref | en | CoNLL | Food, Tool, Action | Link |
| ELGold | Gold-standard multi-genre Polish NER+EL. Includes fiction, press, blogs. | ner | pl | JSONL | PER, LOC, ORG, MISC | Link |
| ENER | E-commerce NER. Product entities in e-commerce text. | ner | en | CoNLL | Product, Brand, Attribute, Price | Link |
| ERST | English RST Signalling Corpus. Discourse markers and signals. | coref | en | Custom | Link | |
| ESCO Skills EL | Entity linking for occupational skills to ESCO taxonomy. Job market domain, multilingual. | entity_linking | mul | Custom | SKILL | N/A |
| Energy NER | Energy sector entities. Power plants, fuels, grid infrastructure. | ner | en | BIO | PowerPlant, Fuel, Grid, Capacity, Company... | Link |
| EnzChemRED | Enzyme chemistry relation extraction. Links enzymes, substrates, products, cofactors from biochemica | ner | en | JSONL | Enzyme, Substrate, Product, Cofactor, Reaction | Link |
| Equestrian NER | Equestrian entities. Horses, breeds, disciplines, tack. | ner | en | CoNLL | Horse, Breed, Discipline, Tack, Rider... | Link |
| Esperanto UD | Universal Dependencies for Esperanto. Planned international language. | constructed | eo | CoNLLU | PER, LOC, ORG | Link |
| Esports NER | Esports entity recognition. Pro players, teams, tournaments, games. | ner | en | CoNLL | Player, Team, Tournament, Game, Champion... | Link |
| Event KG Drift | Multi-perspective concept drift detection on event knowledge graphs. | event_coref | en | Custom | EVENT, CASE, ACTOR, TIME | Link |
| FABLE | Fiction Adapted BERT for Literary Entities. DeBERTa-based NER for narrative fiction. | ner | en | Custom | CHARACTER, LOCATION, ORGANIZATION, ARTIFACT | Link |
| FCC-T | Football Coreference Corpus with token-level annotations. Cross-document event coref in sports news. | coref | en | CoNLL | EVENT, PARTICIPANT, TIME, LOCATION | Link |
| FINER (Food Ingredients NER) | Food ingredient NER from AllRecipes. 182k sentences with ingredient phrases in IOB2 format. | ner | en | CoNLL | INGREDIENT, PRODUCT, QUANTITY, UNIT, STATE | Link |
| FINER (Food) | Food ingredient NER. 181k ingredient phrases in IOB2 format. | ner | en | BIO | Ingredient, Product, Quantity, Unit, State | Link |
| FIREBALL | D&D gameplay NLG with true game state. ~25k sessions, 153k turns with structured game state. | ner | en | JSONL | Character, Item, Location, Creature, Spell... | Link |
| FabNER | Manufacturing domain NER. 12 entity types for Industry 4.0 applications. | ner | en | CoNLL | Material, Process, Machine, Product, Property | Link |
| FantasyCoref | Fantasy fiction coreference. Handles entity transformations. 211 Grimms' stories. | coref | en | JSONL | PER, LOC, ORG | Link |
| Fashion IQ | 77k fashion images with relative captions. 1000 attribute labels. | ner | en | JSONL | Texture, Fabric, Shape, Part, Style... | Link |
| Few-NERD | Fine-grained NER with 66 types in 8 coarse categories. Designed for few-shot learning evaluation. | ner | en | TSV | person, location, organization, building, art... | Link |
| FewRel | Few-shot relation classification benchmark. 100 relations from Wikidata. | relation_extraction | en | JSONL | head, tail | Link |
| FiNER-139 | Financial NER with 139 fine-grained entity types. SEC 10-K/10-Q filings. | ner | en | JSONL | COMPANY, EXECUTIVE, SUBSIDIARY, PRODUCT, REGULATION... | Link |
| FictionNER-750M | Fiction NER at scale. Named entities from 750M tokens of fiction text. | ner | en | JSONL | Character, Location, Object, Organization | Link |
| FinBen NER | Financial NER from FinBen benchmark. Entity extraction from financial documents and filings. | ner | en | JSONL | COMPANY, PERSON, MONEY, PERCENT, DATE... | Link |
| FinNER | Finnish named entity recognition. News and Wikipedia text. | ner | fi | CoNLL | PER, LOC, ORG, DATE, EVENT | Link |
| FinTech Patent NER | FinTech patent entity extraction. Financial technology domain. | ner | en | CoNLL | Technology, Company, Product, Method | Link |
| FinanceNER | Financial domain NER. Named entities from financial documents and news. | ner | en | CoNLL | Company, Stock, Currency, Amount, Date | Link |
| Fitness NER | Fitness entities. Exercises, muscles, equipment, routines. | ner | en | CoNLL | Exercise, Muscle, Equipment, Sets, Reps... | Link |
| Folklore Motif Distribution | 548 folklore motifs across 309 ethnic traditions in the Old World. | ner | mul | Custom | Motif, Tradition, Region, Character | Link |
| Football Coreference Corpus | Cross-document event coreference for football matches. Requires temporal reasoning. | coref | en | EVENT, PARTICIPANT, LOC, TIME | N/A | |
| Football Coreference Corpus (v2) | Cross-document event coreference for football matches. | event_coref | en | Custom | Event, Team, Player, Location | Link |
| Four Regions Geology NER | Regional geological surveys with 6 typical geological categories. | ner | zh | BIO | Rock, Mineral, Stratum, Structure, Age... | Link |
| Fragrance NER | Perfume entities. Notes, accords, houses, concentrations. | ner | en | JSONL | Note, Accord, House, Concentration, Season... | Link |
| French Clinical NER | French clinical NER from hospital records. APHP collaboration. | ner | fr | Standoff | Drug, Disease, Procedure, Date | Link |
| French Full-Length Fiction Coreference | Complete French novels spanning three centuries with character coreference. | coref | fr | CoNLL | Character, Location, Organization | Link |
| GAP | Gender Ambiguous Pronoun resolution. Google's benchmark for exposing gender bias in coreference syst | coref | en | TSV | PER | Link |
| GCDC | Grammarly Corpus of Discourse Coherence. Real-world texts with coherence ratings across 4 domains. | abstract_anaphora | en | TSV | N/A | |
| GENIA | Biomedical NER for molecular biology. First large-scale biomedical NER corpus; historically signific | ner | en | XML | DNA, RNA, protein, cell_line, cell_type | Link |
| GENIA Nested | Biomedical nested NER from GENIA corpus. Up to 3 levels of nesting. | ner | en | CoNLL | DNA, RNA, PROTEIN, CELL_LINE, CELL_TYPE | Link |
| GICoref | Gender-inclusive coreference. Written by/about trans and non-binary individuals. | coref | en | CoNLL | PER | Link |
| GLUECoS | Code-Switching GLUE benchmark. NLU for code-switched text. | ner | mul | JSONL | PER, LOC, ORG | Link |
| GNER | Chinese geological entities from geoscience survey reports. | ner | zh | BIO | Rock, Mineral, Stratum, Age, Location | Link |
| GUM | Georgetown University Multilayer corpus. Rich annotation across 12 genres. | ner | en | CoNLL | person, place, organization, time, event | Link |
| Gardening NER | Gardening entities. Plants, soil, seasons, techniques. | ner | en | CoNLL | Plant, Soil, Season, Technique, Tool... | Link |
| Genealogy NER | Genealogical records entities. Names, relationships, dates, locations. | ner | en | Custom | Person, Relationship, BirthDate, DeathDate, Location... | Link |
| GeoWebNews | Geoparsing benchmark from web news. Toponyms with geocoding coordinates. | ner | en | CoNLL | LOC, GPE, FACILITY | Link |
| GermEval 2014 | German NER shared task. Standard German NER benchmark with nested entities. | ner | de | CoNLL | PER, LOC, ORG, OTH | Link |
| GermEval Discontinuous | German discontinuous NER from GermEval 2014. Non-contiguous entity spans. | ner | de | CoNLL | PER, ORG, LOC, OTH | Link |
| Google-RE | Google Relation Extraction dataset. Wikipedia sentences with relation annotations. | relation_extraction | en | JSON | PER, LOC, ORG | Link |
| Gothic UD | Universal Dependencies for Gothic. Wulfila's Bible translation. | historical | got | CoNLLU | PER, LOC, GPE | Link |
| Greek Mythology Knowledge Graph | Coref + RE pipeline for mythological texts. 15k+ entities from Roscher's Lexikon. | ner | en | Custom | Deity, Hero, Place, Creature, Object... | Link |
| Guaraní NER | Guaraní language NER. South American indigenous language. | ner | gn | CoNLL | PER, LOC, ORG | Link |
| Gun Violence Corpus | Cross-document event coreference for gun violence. Tests domain transfer from ECB+. | coref | en | Custom | EVENT, PARTICIPANT, WEAPON, LOCATION, TIME | Link |
| Gun Violence Corpus (v2) | Gun violence event extraction. Named entities and events from news. | ner | en | Custom | Shooter, Victim, Weapon, Location, Date | Link |
| HAREM | Portuguese NER evaluation. First and Second HAREM conferences. | ner | pt | SGML | PESSOA, LOCAL, ORGANIZACAO, TEMPO, VALOR | Link |
| HIPE-2022 | Multilingual Historical NER. 6 datasets across 11 languages including Latin. | ner | mul | TSV | PER, LOC, ORG, PROD | Link |
| HOMOMEX | Homonym resolution in Mexican Spanish. Word sense disambiguation. | multilingual | es | JSONL | Link | |
| HUPD | Harvard USPTO Patent Dataset. Patent application NER. | ner | en | JSONL | Inventor, Assignee, Reference, Claim | Link |
| Healthcare Admin NER | Healthcare administration entities. Procedures, billing codes, facilities. | ner | en | BIO | Procedure, BillingCode, Facility, Provider, Insurance | Link |
| Heidelberg Cuneiform Benchmark | Cuneiform sign classification across historical periods. | ner | akk | Custom | Sign, Determinative, Logogram | Link |
| High Valyrian | High Valyrian corpus. Game of Thrones constructed language. | constructed | hvy | Custom | PER, LOC | Link |
| Hindi-English Social Media NER | Code-switched Hindi-English NER from social media. | ner | hi-en | CoNLL | PER, LOC, ORG | Link |
| Hinglish NER | Hindi-English code-mixed social media NER. Roman script Hindi mixed with English. | ner | mul | JSONL | PER, LOC, ORG | Link |
| HistNERo | Romanian historical newspaper NER. First Romanian historical NER corpus from four regions. | ner | ro | CoNLL | PER, LOC, ORG, DATE, MISC | Link |
| Historical Chinese NER | Multi-task historical Chinese corpus. NER + entity linking + coreference + relations. | ner | zh | JSONL | PER, LOC, ORG, TIME, OFFICIAL | N/A |
| Hittite UD | Universal Dependencies for Hittite. Ancient Anatolian language. | historical | hit | CoNLLU | PER, LOC, GPE | Link |
| Human-Voice Agent Interaction | Naturalistic French dialogue from human-voice agent interactions. Response tokens, aside sequences, | abstract_anaphora | fr | JSONL | RESPONSE_TOKEN, DISCOURSE_DEIXIS, PROPOSITIONAL_ANAPHORA | N/A |
| IMDb Semi-Structured RE | Distantly supervised extraction from structured web content. | relation_extraction | en | JSONL | Movie, Person, Role, Date, Award | Link |
| ISNotes | Unrestricted bridging anaphora on OntoNotes. ~660 bridging pairs. | coref | en | MMAX2 | PER, LOC, ORG | Link |
| IndicNER | Indian languages NER covering 11 Indian languages. Low-resource multilingual NER. | ner | mul | CoNLL | PER, LOC, ORG | Link |
| Insurance NER | Insurance domain entities. Policies, claims, coverages. | ner | en | JSONL | Policy, Claim, Coverage, Premium, Deductible... | Link |
| Interlingue Wikipedia | Interlingue (Occidental) Wikipedia text corpus. International auxiliary language. | constructed | ie | XML | Link | |
| Interslavic | Interslavic zonal auxiliary language. Constructed for Slavic intelligibility. | constructed | isv | Custom | PER, LOC, ORG | Link |
| JNLPBA | JNLPBA 2004 shared task. Bio-entity recognition in PubMed abstracts. | ner | en | CoNLL | PROTEIN, DNA, RNA, CELL_TYPE, CELL_LINE | Link |
| Job Posting NER | Job posting entity extraction. Requirements, benefits, qualifications. | ner | en | CoNLL | JobTitle, Skill, Salary, Location, Company... | Link |
| KORE50 | Short, highly ambiguous entity linking snippets. Tests disambiguation difficulty. | entity_linking | en | Custom | PER, LOC, ORG | Link |
| Klingon | Klingon language corpus. Star Trek constructed language. | constructed | tlh | Custom | PER, LOC, ORG | Link |
| Klingon Effect LID | Language ID dataset with 11 constructed languages. 14.2M sentences across 101 languages. | constructed | mul | Custom | Link | |
| Knitting NER | Knitting and crafts entities. Patterns, yarns, stitches, tools. | ner | en | JSONL | Pattern, Yarn, Stitch, Tool, Size... | Link |
| KoCoNovel | Korean character coreference in 50 modern/contemporary novels. First Korean literary coreference dat | coref | ko | CoNLL | PER | Link |
| LEMONADE | Large-scale multilingual conflict event corpus. 39k events across 20 languages for CDEC search. | coref | mul | JSONL | EVENT, PARTICIPANT, LOCATION, TIME | Link |
| LGL | Local-Global Lexicon for toponym disambiguation. News articles with geolocation. | ner | en | Custom | LOC | Link |
| LIEDER | Linguistically-Informed Evaluation for Discourse Entity Recognition. Tests existence, uniqueness, pl | abstract_anaphora | en | Custom | DISCOURSE_ENTITY | N/A |
| LLM-RocMin-NER | Rocks and minerals NER. 2-shot prompt-based extraction with nested handling. | ner | en | JSONL | Rock, Mineral, Element, Property, Location | Link |
| LT4HALA Hebrew | Biblical Hebrew NER and coreference annotation. | ner | hbo | PER, LOC, ORG, GPE | N/A | |
| Latin ITTB | Index Thomisticus Treebank. Medieval Latin theological texts. | historical | la | CoNLLU | PER, LOC, ORG | Link |
| Latin PROIEL | Pragmatic Resources in Old Indo-European Languages. Classical Latin. | historical | la | CoNLLU | PER, LOC, GPE | Link |
| Latin UD | Universal Dependencies for Latin. Classical through Medieval. | ner | la | CoNLLU | PER, LOC, ORG | Link |
| LegNER | Legal domain NER. Named entities in legal documents and court opinions. | ner | en | CoNLL | Court, Judge, Statute, Party, Date | Link |
| LegalCore | Event coreference in long legal documents. Long-distance cross-section event links. | coref | en | JSONL | EVENT, PARTICIPANT, TIME | N/A |
| LegalNER | Legal Named Entity Recognition. Court cases and legislation. | ner | en | CoNLL | Court, Judge, Lawyer, Party, Statute... | Link |
| LexGLUE NER | Legal NER from LexGLUE benchmark. Legal entity extraction from case law and contracts. | ner | en | JSONL | PERSON, ORGANIZATION, LOCATION, DATE, LEGAL_REF... | Link |
| LinCE | Linguistic Code-switching Evaluation. Multiple code-switching benchmarks. | ner | mul | CoNLL | PER, LOC, ORG | Link |
| LitBank | Literary coreference. 100 public-domain English fiction works (1719-1922) with ACE-style entities. | coref | en | BRAT | PER, LOC, ORG, GPE, FAC... | Link |
| Logistics NER | Supply chain and logistics entities. Shipments, warehouses, routes. | ner | en | CoNLL | Shipment, Warehouse, Route, Carrier, TrackingNumber... | Link |
| Lojban | Lojban logical language corpus. Constructed for unambiguous communication. | constructed | jbo | Custom | Link | |
| Lojban Tatoeba | Lojban-English sentence pairs from Tatoeba. Logical language translation corpus. | constructed | jbo | TSV | Link | |
| Long Document NER | Long-document NER benchmark. Tests entity recognition across extended contexts. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| LongtoNotes | OntoNotes with merged coreference chains. Manually merges split OntoNotes documents back into full d | coref | en | CoNLL | PER, ORG, GPE, NORP | Link |
| MACCROBAT | Biomedical NER corpus with extensive coverage. Used with RoBERTa-WWM and deep models. | ner | en | Custom | Disease, Chemical, Gene, Species | Link |
| MAP | Medical Annotation Pipeline dataset. Clinical concept normalization. | ner | en | Standoff | Drug, Disease, Procedure | Link |
| MATRES | Multi-Axis Temporal Relations. Cleaner, more consistent event-event temporal relation annotations. | ner | en | Custom | EVENT | Link |
| MAVEN | Massive general-domain event detection. 168 event types from Wikipedia, 4x larger than ACE. | ner | en | JSONL | EVENT_TRIGGER | Link |
| MAVEN-ARG | MAVEN extended with event arguments and relations. Complete event extraction benchmark. | ner | en | JSONL | EVENT_TRIGGER, EVENT_ARGUMENT, EVENT_RELATION | Link |
| MEANTIME | Multilingual news corpus with within- and cross-document event coreference. 4 languages. | coref | mul | Custom | EVENT, TIMEX, PARTICIPANT, LOCATION | Link |
| MELO | Multilingual Entity Linking of Occupations. 48 datasets across 21 languages for occupation EL. | entity_linking | mul | JSONL | OCCUPATION | Link |
| MHERCL | Historical long-tail entity linking benchmark. Tests LLM behavior on rare/historical Wikidata entiti | entity_linking | en | JSONL | HISTORICAL_ENTITY | Link |
| MIT Movie | Movie domain slot filling NER. Created at MIT SLS for spoken language understanding research. | ner | en | BIO | Actor, Director, Genre, Title, Year... | Link |
| MIT Restaurant | Restaurant domain slot filling NER. Part of MIT SLS spoken dialogue systems research. | ner | en | BIO | Amenity, Cuisine, Dish, Hours, Location... | Link |
| MNER-MI | Multimodal NER with Multiple Images. Social media posts with multiple image context. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| MOF Dataset | Metal-organic frameworks joint NER+RE. GPT-3/Llama extraction. | ner | en | JSONL | MOF, Linker, Metal, Property, Application | Link |
| MSNBC | Small news article entity linking dataset. Commonly used for out-of-domain EL evaluation. | entity_linking | en | Custom | PER, LOC, ORG | N/A |
| MSNER | Multilingual Spoken NER. Speech-to-NER on VoxPopuli parliamentary speeches. | ner | mul | CoNLL | PER, LOC, ORG, MISC | Link |
| MSP-Podcast | 100k+ English podcast episodes with multimodal annotations. | ner | en | Custom | Speaker, Topic, Emotion, Sentiment | Link |
| MUC-6 | Message Understanding Conference 6. Seminal NER and coreference dataset. | ner | en | SGML | ENAMEX, TIMEX, NUMEX | Link |
| MUC-7 | Message Understanding Conference 7. Expanded NE types from MUC-6. | ner | en | SGML | ENAMEX, TIMEX, NUMEX | Link |
| Mahānāma | Sanskrit Entity Discovery and Linking from Mahābhārata. World's largest epic with extreme name varia | coref | sa | CoNLLU | Person, Location, Miscellaneous | Link |
| MalwareTextDB | Annotated malware articles for cybersecurity NER. | ner | en | BRAT | Malware, Vulnerability, Tool, ThreatActor, IOC | Link |
| Manufacturing NER | Manufacturing entities. Parts, processes, machines, defects. | ner | en | BIO | Part, Process, Machine, Defect, Material... | Link |
| Maritime NER | Maritime entities. Vessels, ports, routes, cargo. | ner | en | CoNLL | Vessel, Port, Route, Cargo, Flag... | Link |
| MasakhaNER | NER for 10 African languages. PER/LOC/ORG/DATE. | ner | mul | CoNLL | PER, LOC, ORG, DATE | Link |
| MasakhaNER 2.0 | Extended MasakhaNER with 20+ African languages. | ner | mul | CoNLL | PER, LOC, ORG, DATE | Link |
| MasakhaNEWS | News topic classification for 16 African languages. | multilingual | mul | HuggingFace | business, entertainment, health, politics, religion... | Link |
| MasakhaPOS | Part-of-speech tagging for 20 African languages. | multilingual | mul | CoNLL-U | NOUN, VERB, ADJ, ADV, PRON... | Link |
| MathDial | Teacher-student tutoring dialogues on multi-step math problems. | ner | en | JSONL | Student, Teacher, Problem, Step, Hint | Link |
| Mathematical Entities | Terminology and definition extraction from mathematical text. Category theory corpora. | ner | en | LaTeX | TERM, DEFINITION, THEOREM | Link |
| MedMentions | Large-scale biomedical concept mentions mapped to UMLS. PubMed abstracts with fine-grained semantic | ner | en | Custom | UMLS_CONCEPT | Link |
| Medieval Charter NER | Multilingual medieval charter NER. Latin, French, Spanish from major charter collections. | ner | mul | CoNLL | PER, LOC, ORG, DATE | Link |
| Medieval Czech Charters | Czech medieval charter NER. Historical legal documents. | ner | cs | XML | PER, LOC, ORG, DATE | Link |
| Mention Resolution LLM | MCQ-format coreference for LLMs from LitBank and FantasyCoref. Tests referential understanding on na | coref | en | JSONL | PER, LOC, ORG | Link |
| Mewsli-X | Multilingual entity linking across 50 languages. Wikipedia-linked mentions for zero-shot cross-lingu | entity_linking | mul | TSV | ENTITY | Link |
| MixRED | Mixed relation extraction dataset. Multiple relation types and domains. | relation_extraction | en | JSONL | PER, ORG, LOC | Link |
| MovieCoref | Screenplay coreference. Character coreference in movie screenplays with unique structural challenges | coref | en | CoNLL | PER | Link |
| MuDoCo | Multi-domain document-level coreference. Dialog-based. | coref | en | JSON | PER, LOC, ORG | Link |
| Multi-Bio Long NER | Long biomedical document NER. Full-text articles vs abstracts. | ner | en | JSONL | GENE, CHEMICAL, DISEASE, SPECIES | Link |
| MultiCoNER | Multilingual Complex NER. 11 languages with fine-grained and complex entities. | ner | mul | CoNLL | PER, LOC, CORP, GRP, PROD... | Link |
| MultiCoNER v2 | MultiCoNER v2 with expanded languages and fine-grained types. | ner | mul | CoNLL | PER, LOC, CORP, GRP, PROD... | Link |
| MultiNERD | Large multilingual NER covering 10 languages. Created to address scarcity of multilingual fine-grain | ner | en | JSONL | PER, LOC, ORG, ANIM, BIO... | Link |
| MultiWOZ NER | Multi-domain task-oriented dialogue with slot/entity annotations. Multi-turn conversations. | ner | en | JSONL | RESTAURANT, HOTEL, ATTRACTION, TAXI, TRAIN... | Link |
| Multiparty Dialogue Coreference | Coreference in multi-party conversations. Meeting and chat transcripts. | coref | en | JSONL | PER, ORG, LOC | Link |
| Music-NER | Music domain entities. Artists, albums, songs, genres. | ner | en | CoNLL | Artist, Album, Song, Genre, Instrument... | Link |
| MusicBrainz RE | Music metadata relations from Freebase/MusicBrainz. 116M instances. | relation_extraction | en | Custom | Artist, Album, Track, Label, Genre | Link |
| Māori NER | Named entity recognition for Te Reo Māori. New Zealand indigenous language corpus. | ner | mi | JSONL | PER, LOC, ORG | N/A |
| NCBI Disease | NCBI disease mentions corpus. Foundational resource for disease NER from NIH. | ner | en | BIO | Disease | Link |
| NCERB | Named Clinical Entity Recognition Benchmark. Multi-dataset clinical NER evaluation suite. | ner | en | Custom | Problem, Treatment, Test, Medication, Anatomy | Link |
| ND-NER | National defense OSINT NER. 17+ entity types for military equipment. | ner | en | CoNLL | AIRCRAFT, SHIP, MISSILE, TANK, FIREARM... | Link |
| NER Social Food | Food-related NER from social media. Recipes and food mentions. | ner | en | CoNLL | Food, Ingredient, Brand, Restaurant | Link |
| NHK Recipe Dataset | Japanese recipes with ingredient state tracking across cooking steps. | ner | ja | JSONL | Ingredient, Action, State, Tool | Link |
| NLM-Chem | Chemical entity recognition and normalization. Full-text PMC articles with MeSH identifiers. | ner | en | BRAT | CHEMICAL, DRUG | Link |
| NNE (Nested Named Entities) | Large-scale nested NER corpus from Wikipedia/news. Deep nesting up to 6 levels. | ner | en | CoNLL | PER, LOC, ORG, GPE, NORP... | Link |
| NYT-10 | New York Times distant supervision RE. 24 Freebase relations. | relation_extraction | en | Custom | PER, ORG, LOC | Link |
| NYT-FB | New York Times with Freebase relations. Distant supervision relation extraction. | relation_extraction | en | JSONL | PER, LOC, ORG | Link |
| Na'vi | Na'vi language corpus. Avatar constructed language. | constructed | nav | Custom | PER, LOC | Link |
| Nahuatl NER | Named entity recognition for Nahuatl (Aztec language). Colonial-era texts and modern usage. | ner | nah | CoNLL | PER, LOC, ORG | N/A |
| NaijaNER | Nigerian Pidgin NER corpus. | ner | pcm | PER, LOC, ORG | N/A | |
| Natural Products RE | Relation extraction in underexplored biomedical domains. Diversity-sampled entities. | relation_extraction | en | JSONL | NaturalProduct, Organism, Activity, Target | Link |
| NatureLM-audio | Foundation model training collection for bioacoustics. Multi-species audio-text pairs. | arcane_domain | en | Custom | SPECIES, CALL_TYPE, BEHAVIOR | Link |
| Navajo Morphology | Navajo morphological annotation. North American indigenous language. | ner | nv | CoNLLU | PER, LOC | Link |
| NoiseBench | Robustness benchmark for NER. 6 real noise types: expert, crowd, LLM, distant/weak supervision. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| NomBank Implicit | Implicit arguments in NomBank. Nominal predicate-argument structures. | coref | en | Custom | Link | |
| NorNE | Norwegian NER covering Bokmål and Nynorsk. Morphologically rich language from news and parliament te | ner | no | CoNLL | PER, LOC, ORG, GPE, PROD... | Link |
| NovelCR | Large-scale bilingual (EN/ZH) novel coreference. 148k EN mentions, 311k ZH mentions with 74-83% span | coref | mul | JSONL | PER, LOC, ORG | Link |
| Numismatics NER | Coin collecting entities. Denominations, mints, grades, errors. | ner | en | JSONL | Denomination, Mint, Grade, Error, Year... | Link |
| ORACC | Open Richly Annotated Cuneiform Corpus. Sumerian, Akkadian, Urartian. | ner | akk | JSON | PER, LOC, ORG, DIVINE | Link |
| Old Church Slavonic UD | Universal Dependencies for OCS. Medieval Slavic liturgical language. | historical | cu | CoNLLU | PER, LOC, GPE | Link |
| Old English UD | Universal Dependencies for Old English (Anglo-Saxon). York-Toronto-Helsinki corpus. | ner | ang | CoNLLU | PER, LOC, ORG | Link |
| Old Norse UD | Universal Dependencies for Old Norse/Icelandic Sagas. PROIEL and ISWOC treebanks. | ner | non | CoNLLU | PER, LOC, ORG | Link |
| OmniNER2025 | Diverse fine-grained Chinese NER covering informal text (social media, forums). Large-scale benchmar | ner | zh | JSONL | PER, LOC, ORG, GPE, FAC... | N/A |
| OntoNotes 5.0 | OntoNotes Release 5.0. Multi-genre corpus with NER, coref, and more. | ner | en | CoNLL | PER, ORG, GPE, LOC, FAC... | Link |
| OntoNotes Coreference | OntoNotes 5.0 coreference annotations. Gold-standard multi-genre coref including WSJ, broadcast, web | coref | en | CoNLL | PER, ORG, GPE, NORP | Link |
| OntoNotes Sample | Multi-genre 18-type NER from OntoNotes 5.0. Rich annotation including coreference, parsing, and Prop | ner | en | CoNLL | PERSON, ORG, GPE, LOC, DATE... | Link |
| OpenBoek | Dutch literary coreference. Open-source Dutch fiction annotation. | coref | nl | CoNLL | PER, LOC, ORG | Link |
| OpenNER 1.0 | Open domain NER benchmark. Broad coverage across multiple domains. | ner | en | JSONL | PER, LOC, ORG, EVENT, PRODUCT | Link |
| Origami NER | Origami entities. Folds, bases, models, paper types. | ner | en | CoNLL | Fold, Base, Model, PaperType, Designer... | Link |
| PDTB 3.0 | Penn Discourse TreeBank v3. 43 discourse relation types. | abstract_anaphora | en | N/A | ||
| PDTB 3.0 (v2) | Penn Discourse Treebank 3.0. Discourse relations and connectives. | coref | en | Custom | Link | |
| PII Masking 200k | 200k synthetic examples for PII detection and masking. Covers 50+ PII types. | ner | mul | JSONL | EMAIL, PHONE, SSN, ADDRESS, NAME... | Link |
| Paleontology NER | Dinosaurs, mammals, and river ecosystems entity retrieval. | ner | en | CoNLL | Taxon, Location, TimePeriod, Formation, Specimen | Link |
| Party Extraction Dataset | Legal party identification from contracts. Contextual span representations. | ner | en | Standoff | Party, Role, Organization | Link |
| PharmaNER | Pharmaceutical named entity recognition. Drug names, dosages, routes. | ner | en | BIO | Drug, Dosage, Route, Frequency, Indication | Link |
| Philately NER | Stamp collecting entities. Issues, perforations, watermarks, varieties. | ner | en | JSONL | Issue, Perforation, Watermark, Variety, Country... | Link |
| Photography NER | Photography entities. Cameras, lenses, settings, techniques. | ner | en | CoNLL | Camera, Lens, Aperture, ShutterSpeed, ISO... | Link |
| Polish Coreference Corpus | Polish coreference resolution corpus. General domain Polish text. | coref | pl | Custom | PER, ORG, LOC | Link |
| PolyIE | Polymer materials NER + relation extraction from literature. | ner | en | JSONL | Polymer, Property, Value, Condition, Method | Link |
| Polyglot-NER | Massively multilingual NER. 40 languages with silver annotations from Wikipedia. | ner | mul | CoNLL | PER, LOC, ORG | Link |
| PragmEval | Pragmatics-centered evaluation framework: 11 datasets covering discourse relations, speech acts, sta | abstract_anaphora | en | TSV | Link | |
| PreCo | Large-scale coreference from PreCo reading comprehension corpus. 10x larger than OntoNotes. | coref | en | JSONL | PER, LOC, ORG | Link |
| Product Review NER | E-commerce product reviews with aspect and sentiment entities. | ner | en | XML | Aspect, Opinion, Product, Feature, Sentiment | Link |
| PubMed Discontinuous | PubMed abstracts with discontinuous biomedical entities. Complex entity boundaries. | ner | en | CoNLL | CHEMICAL, DISEASE, GENE | Link |
| QUEEREOTYPES | LGBTQ+ stereotype detection in text. Bias in language models. | bias_evaluation | en | JSONL | Link | |
| QUOREF | Question answering requiring coreference. Reading comprehension. | coref | en | JSONL | PER, LOC, ORG | Link |
| Quaero Old Press | French historical newspaper NER from 1890. OCR-corrected with manual NE annotations. | ner | fr | XML | PER, LOC, ORG, TIME, PROD | N/A |
| QueerBench | Queer identity coreference benchmark. LGBTQ+ representation in NLP. | coref | en | JSONL | PER | Link |
| Quenya | Quenya language corpus. Tolkien's Elvish language. | constructed | qya | Custom | PER, LOC | Link |
| RAMS | Roles Across Multiple Sentences. Cross-sentence event argument extraction with 139 event types. | ner | en | JSONL | EVENT_TRIGGER, EVENT_ARGUMENT | Link |
| REBEL | Relation Extraction By End-to-end Language generation. Large-scale RE dataset. | relation_extraction | en | JSONL | PER, LOC, ORG, Event | Link |
| RISeC | Procedural cooking text with temporal relations and manner descriptions. | coref | en | Standoff | Ingredient, Tool, Action, State, Time | Link |
| RST Discourse Treebank | Penn Discourse Treebank with RST annotations. Discourse relations and structure. | coref | en | Custom | Link | |
| RadCoref | Radiology report coreference from MIMIC-CXR. Clinical domain long-document coref. | coref | en | BRAT | ANATOMY, OBSERVATION, FINDING | Link |
| Re-TACRED | Large-scale relation extraction. 41 relation types + no_relation. Cleaned TACRED. | relation_extraction | en | JSONL | PER, ORG, LOC, DATE, NUM | N/A |
| Real Estate NER | Property listings entity extraction. Addresses, prices, features. | ner | en | CoNLL | Address, Price, Size, Rooms, Amenity... | Link |
| RealToxicityPrompts | 100k prompts for measuring toxicity generation in language models. | bias_evaluation | en | JSONL | Link | |
| ReasoningNER | Zero-shot NER evaluation suite across 20 diverse datasets. Tests LLM NER capabilities. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| Recipe NER | Deep learning recipe NER. Multi-scale datasets with ingredient and instruction entities. | ner | en | BIO | INGREDIENT, QUANTITY, UNIT, PROCESS, UTENSIL... | Link |
| RecipeDB Annotated | 88k ingredient phrases via clustering-based sampling with Stanford NER. | ner | en | JSONL | Ingredient, Quantity, Unit, Preparation | Link |
| Resume NER | Resume/CV entity extraction. Skills, experience, education. | ner | en | JSONL | Skill, Company, Degree, University, Date... | Link |
| Retail Inventory NER | Retail inventory entities. SKUs, quantities, locations, prices. | ner | en | JSONL | SKU, Quantity, Location, Price, Category... | Link |
| Ritter Twitter NER | Twitter NER dataset with diverse entity types from tweets. | ner | en | CoNLL | PER, LOC, ORG, PRODUCT, FACILITY... | Link |
| RockNER | Robustness benchmark for NER. Real-world adversarial examples with boundary ambiguity. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| Russian Cultural NER | Russian cultural heritage NER. Museums, artworks, cultural entities. | ner | ru | CoNLL | Artwork, Artist, Museum, Period, Style | Link |
| S800 | Species-800 corpus. Species name recognition in biomedical text. | ner | en | XML | SPECIES | Link |
| SCROLLS QMSum | Long-document QA from SCROLLS benchmark. Query-focused meeting summarization. | long_document | en | JSONL | Link | |
| SEC-filings | Finance domain NER from SEC filing documents. | ner | en | CoNLL | Company, Person, Money, Date, Percentage | Link |
| SLUE | Spoken Language Understanding Evaluation. NER in speech transcripts. | ner | en | JSONL | PER, LOC, ORG, DATE | Link |
| SNOMED CT EL Challenge | Clinical entity linking to SNOMED CT. From SNOMED International 2024 challenge. | entity_linking | en | Custom | CLINICAL_CONCEPT | N/A |
| SPoRC | Structured Podcast Research Corpus. 1.1M episodes with host/guest extraction. | ner | en | JSONL | Host, Guest, Organization, Topic | Link |
| Sanskrit NER (Bhagavad Gita) | Sanskrit NER from Bhagavad Gita and Patanjali Yoga Sutras. | ner | sa | CoNLL | PER, LOC, ORG, CONCEPT | Link |
| Sanskrit UD | Universal Dependencies for Vedic and Classical Sanskrit. Includes Vedas and epics. | ner | sa | CoNLLU | PER, LOC, ORG | Link |
| Saraga | Indian Art Music dataset. Carnatic and Hindustani traditions. | ner | mul | JSONL | Raaga, Taala, Artist, Composition, Instrument | Link |
| SciCo | Scientific coreference. Cross-document concept coreference in AI papers. | coref | en | JSONL | Method, Task, Dataset | Link |
| SciCo-Radar | Scientific cross-document concept coreference. Dynamic definitions via LLM retrieval. | coref | en | JSONL | CONCEPT, METHOD, TASK, MATERIAL | Link |
| SciER | Scientific entity and relation extraction. From AI/ML papers. | ner | en | JSONL | Task, Method, Metric, Material, Generic | Link |
| SciERC | Scientific information extraction from AI/ML papers. Nested entities and relations. | ner | en | JSONL | TASK, METHOD, METRIC, MATERIAL, GENERIC... | Link |
| SciERC NER | Scientific Information Extraction NER. AI paper abstracts. | ner | en | JSONL | Task, Method, Metric, Material, OtherScientificTerm... | Link |
| SciNER | Scientific literature NER. Entities from scientific papers across disciplines. | ner | en | JSONL | Method, Task, Dataset, Metric, Material | Link |
| SciNER Nested | Scientific paper NER with nested annotations. Methods, tasks, and datasets. | ner | en | JSONL | TASK, METHOD, METRIC, MATERIAL, GENERIC | Link |
| Scuba NER | Scuba diving entities. Equipment, sites, certifications, marine life. | ner | en | CoNLL | Equipment, DiveSite, Certification, MarineLife, Depth... | Link |
| SemEval-2010 Task 8 | Semantic relation classification between nominals. 9 relation types. | relation_extraction | en | Custom | e1, e2 | Link |
| SemEval-2013 Task 9.1 | Drug-drug interaction extraction. SemEval shared task. | ner | en | XML | Drug, Drug_n, Group, Brand | Link |
| ShARe 2013 | Clinical disorder mentions from ShARe/CLEF eHealth 2013. Discontinuous entity annotations. | ner | en | Custom | DISORDER | N/A |
| ShARe 2014 | Clinical disorder mentions from ShARe/CLEF eHealth 2014. Improved discontinuous NER annotations. | ner | en | Custom | DISORDER, ANATOMY, MODIFIER | N/A |
| ShARe/CLEF | Shared Annotated Resources for clinical NER. ShARe/CLEF eHealth shared task. | ner | en | BRAT | DISORDER, FINDING, PROCEDURE | N/A |
| ShARe/CLEF 2013 | ShARe/CLEF eHealth 2013. Disorder mention recognition. | ner | en | Standoff | Disorder | Link |
| ShARe/CLEF 2014 | ShARe/CLEF eHealth 2014. Improved disorder normalization. | ner | en | Standoff | Disorder | Link |
| Shell Nouns (ASN) | Anaphoric shell noun resolution. 670 English shell nouns from Schmid taxonomy. | abstract_anaphora | en | N/A | ||
| Shipibo-Konibo NER | Shipibo-Konibo language NER. Peruvian Amazonian language. | ner | shp | CoNLL | PER, LOC, ORG | Link |
| Solid-State Doping | Impurity doping in materials. Joint NER+RE from literature. | ner | en | JSONL | Host, Dopant, Property, Concentration, Method | Link |
| Spanish Medieval TEI | Medieval Spanish manuscript NER. TEI-encoded historical texts. | ner | es | XML | PER, LOC, ORG, DATE | Link |
| Sports NER | Player names, team names, event specifics from sports texts. | ner | en | CoNLL | Player, Team, Event, Venue, Score... | Link |
| Spotify Podcasts Dataset | Professional and amateur podcast episodes with transcriptions. | ner | en | JSONL | Host, Guest, Topic, Advertisement | Link |
| StereoSet | Measuring stereotypical bias in language models. 4 target domains. | bias_evaluation | en | JSONL | Link | |
| Streaming CD-Coref | Streaming cross-document entity coreference protocol. News domain streaming evaluation. | coref | en | Custom | PER, ORG, LOC | Link |
| TAC-KBP | TAC Knowledge Base Population. Entity linking and slot filling benchmark. | entity_linking | en | Custom | PER, ORG, GPE | Link |
| TACRED | TAC Relation Extraction Dataset. 42 relations from TAC KBP. | relation_extraction | en | JSONL | PER, ORG | N/A |
| TASTEset | Recipe ingredient NER. 700 annotated recipe ingredient lists with 9 entity classes. | ner | en | BIO | INGREDIENT, QUANTITY, UNIT, STATE, SIZE... | Link |
| THYME | Temporal Histories of Your Medical Events. Clinical temporal IE with events and relations. | ner | en | Custom | EVENT, TIMEX3, SECTIONTIME, DOCTIME | N/A |
| TREC Question Classification | Question type classification. 6 coarse classes, 50 fine-grained types. | dialogue | en | HuggingFace | ABBR, DESC, ENTY, HUM, LOC... | Link |
| TRIDIS | Triple Discourse dataset. Entity and discourse relations. | coref | en | JSONL | PER, LOC, ORG | Link |
| TV Show Multilingual Coreference | English TV show transcripts with projections to Chinese and Farsi. | coref | mul | CoNLL | Character, Location, Object | Link |
| Tarot NER | Tarot entities. Cards, spreads, meanings, suits. | ner | en | CoNLL | Card, Spread, Meaning, Suit, Position... | Link |
| Tattoo NER | Tattoo entities. Styles, placements, artists, designs. | ner | en | JSONL | Style, Placement, Artist, Design, Color... | Link |
| TechNER | Technology domain NER. Software, hardware, and technical entities. | ner | en | CoNLL | Software, Hardware, Company, Version, Language | Link |
| Telecom NER | Telecommunications entities. Networks, devices, protocols. | ner | en | CoNLL | Network, Device, Protocol, Carrier, Plan... | Link |
| Telenovela NER | Spanish-language soap opera entities. Characters, relationships, plots. | ner | es | CoNLL | Character, Relationship, PlotPoint, Actor, Network | Link |
| Tem-DocRED | Temporal document-level relation extraction. Converts static triples to temporal quadruples. | relation_extraction | en | JSONL | PER, ORG, LOC, TIME | Link |
| TempEval-3 | Temporal annotation benchmark. TIMEX, EVENT spans, and temporal relations. | ner | en | TimeML | TIMEX, EVENT | Link |
| Theme Park NER | Theme park entities. Rides, parks, manufacturers, statistics. | ner | en | JSONL | Ride, Park, Manufacturer, Height, Speed... | Link |
| TikTalkCoref | Chinese social media dialogue coreference. Person mentions in Douyin video comments with singleton h | coref | zh | Custom | PER | N/A |
| TimeBank 1.2 | Canonical temporal IE corpus. News articles with TIMEX3, events, and temporal links (TLINKs). | ner | en | TimeML | TIMEX3, EVENT, SIGNAL | Link |
| TimeBank-Dense | Dense temporal relation annotation. Re-annotation of TimeBank with more consistent TLINK labels. | ner | en | TimeML | EVENT, TIMEX3 | Link |
| Toki Pona | Toki Pona minimalist language corpus. 120-word philosophical language. | constructed | tok | Custom | Link | |
| Toki Pona Corpus | Toki Pona minimalist language corpus. 120-word language for semantic simplification. | constructed | tok | TXT | Link | |
| Tourism NER | Tourism and travel entities. Attractions, hotels, restaurants. | ner | en | CoNLL | Attraction, Hotel, Restaurant, City, Activity... | Link |
| TransMuCoRes | Coreference in 31 South Asian languages. Silver annotations via NLLB-200 translation. | coref | mul | JSONL | PER, LOC, ORG | N/A |
| TweetNER7 | Twitter NER across 7 entity types. Fine-grained social media NER with temporal annotations. | ner | en | JSONL | person, location, corporation, product, creative_work... | Link |
| TweetNERD | Twitter NER + Entity Linking. End-to-end NERD benchmark spanning 2010-2021. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| TweetTopic | Multi-label topic classification for tweets. 6 domains, 19 topics. | social_media | en | HuggingFace | arts, business, daily_life, pop_culture, science... | Link |
| TwiConv | Twitter conversational coreference. | coref | en | CoNLL | PER, LOC, ORG | Link |
| Twitter-2015 MNER | Multimodal NER on Twitter. Text + image for entity recognition. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| Twitter-GMNER | Grounded Multimodal NER. Entities linked to bounding boxes in social media images. | ner | en | JSONL | PER, LOC, ORG, MISC | Link |
| UD Esperanto Cairo | Universal Dependencies treebank for Esperanto. Syntax annotation without NER layer. | ner | eo | CoNLLU | PER, LOC, ORG | Link |
| ULNER | Ultra-Large Scale NER. Massive silver-standard dataset. | ner | en | JSONL | PER, LOC, ORG, MISC | N/A |
| UNER | Universal NER on Universal Dependencies. Gold NER with unified schema across 13 languages. | ner | mul | CoNLLU | PER, LOC, ORG | Link |
| Universal NER | Cross-lingual NER benchmark spanning 13 diverse languages. Tests zero-shot transfer. | ner | mul | CoNLL | PER, LOC, ORG | Link |
| UniversalNER | Universal NER model benchmark. Multiple domains and languages. | ner | mul | JSONL | PER, LOC, ORG | Link |
| VREN (Volleyball) | Volleyball rally descriptions for tactical statistics extraction. | ner | en | JSONL | Player, Action, Position, Team, Score | Link |
| Veterinary NER | Veterinary medicine entities. Animals, conditions, treatments. | ner | en | BIO | Animal, Breed, Condition, Treatment, Medication... | Link |
| VisDial Coreference | Visual dialog with 120k images and 10-turn dialogs requiring visual coref. | coref | en | JSONL | Object, Person, Location | Link |
| WIESP Astrophysics | WIESP 2022 Astrophysics NER. NASA ADS literature. | ner | en | JSONL | Mission, Instrument, CelestialObject, Phenomenon | Link |
| WIESP2022-NER (DEAL) | Astrophysics NER from NASA ADS. 31 entity types: facilities, wavelengths, telescopes, archives. | ner | en | JSONL | WAVELENGTH, TELESCOPE, FACILITY, MODEL, ARCHIVE... | Link |
| WNED-ClueWeb | Web-scale entity linking from ClueWeb corpus. Tests EL on noisy web text. | entity_linking | en | Custom | ENTITY | N/A |
| WNED-WIKI | Large-scale Wikipedia entity linking dataset extracted from Wikipedia hyperlinks. | entity_linking | en | Custom | ENTITY | Link |
| WNUT-16 | Twitter NER workshop shared task. Focus on rare and emerging entities in noisy social media text. | ner | en | CoNLL | person, geo-loc, company, facility, product... | Link |
| WNUT-17 | Social media NER with emerging entities. Created to evaluate models on rare/emerging entities in noi | ner | en | CoNLL | person, location, corporation, product, creative-work... | Link |
| Water Resource NER | Domain-adaptive NER for AI-driven water resource management. | ner | en | BIO | WaterBody, Infrastructure, Pollutant, Measurement, Policy | Link |
| WaterAgriNER | Water and agriculture domain NER. Environmental science entities. | ner | en | CoNLL | Crop, Chemical, Equipment, Location | Link |
| Weather NER | Weather and climate entities. Events, measurements, locations. | ner | en | BIO | WeatherEvent, Temperature, Precipitation, Location, Date... | Link |
| WebNLG | Web NLG Challenge dataset. RDF-to-text generation with entity-relation triples. | relation_extraction | en | XML | Entity | Link |
| Welsh NER | Named entity recognition for Welsh (Cymraeg). Celtic language NER corpus. | ner | cy | CoNLL | PER, LOC, ORG, MISC | N/A |
| WikiANN | Silver-standard NER from Wikipedia hyperlinks. 282 languages. | ner | mul | PER, LOC, ORG | Link | |
| WikiCoref | Wikipedia coreference corpus. 30 documents with full coreference annotation. | coref | en | CoNLL | PER, ORG, LOC | N/A |
| WikiGold | Wikipedia-based NER (PER, LOC, ORG, MISC). Historically significant as early Wikipedia NER resource. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| WikiNeural | Silver-standard multilingual NER from Wikipedia. 9 languages with automatic annotation. | ner | mul | CoNLL | PER, LOC, ORG, MISC | Link |
| Wikidata Semantic Drift | Semantic drift detection in Wikidata. LLM-based classification inconsistency detection. | entity_linking | mul | Custom | Link | |
| Wine NER | Wine domain entities. Varietals, regions, vintages, tasting notes. | ner | en | CoNLL | Varietal, Region, Vintage, Producer, TastingNote... | Link |
| WinoBias | Coreference bias benchmark. Winograd-schema sentences testing occupational gender stereotypes. | coref | en | Custom | PER | Link |
| WinoPron | Winograd pronoun resolution. Commonsense coreference benchmark. | coref | en | Custom | PER | Link |
| WinoQueer | Anti-LGBTQ+ bias benchmark. Community-in-the-loop design for queer representation. | bias_evaluation | en | CSV | PER | Link |
| Winograd Schema Challenge | Pronoun resolution requiring world knowledge. 273 sentence pairs. | coref | en | XML | PER | Link |
| Woodworking NER | Woodworking entities. Tools, joints, wood types, finishes. | ner | en | CoNLL | Tool, Joint, WoodType, Finish, Technique... | Link |
| Yahoo Answers Topic | Question-answer topic classification. 10 classes covering diverse topics. | dialogue | en | HuggingFace | Society, Science, Health, Education, Computers... | Link |
| Z-coref | Joint coreference and zero-pronoun resolution. For languages with pro-drop (Chinese, Japanese, Korea | coref | mul | CoNLL | ZERO_PRONOUN, ENTITY | N/A |
| ZELDA | Entity disambiguation benchmark. 95k Wikipedia paragraphs, 8 ED datasets unified. | ner | en | CoNLL | PER, LOC, ORG, MISC | Link |
| astroBERT Corpus | Domain-specific BERT trained on 395k astronomical papers. | ner | en | Custom | CelestialObject, Mission, Instrument, Phenomenon | Link |
| i2b2 2010 | Clinical concept extraction and assertion classification. Foundational clinical NER benchmark. | ner | en | Custom | PROBLEM, TREATMENT, TEST | N/A |
| i2b2 2012 Temporal | Clinical temporal relations challenge. Events, TIMEX3, and TLINKs in discharge summaries. | ner | en | Custom | EVENT, TIMEX3 | N/A |
| i2b2 De-identification | i2b2 2014 De-identification Challenge. PHI recognition and removal. | ner | en | Custom | Name, Date, Address, Phone, SSN... | Link |
| i2b2-2010 | i2b2/VA 2010 NLP Challenge. Clinical concept extraction and relations. | ner | en | Custom | Problem, Treatment, Test | Link |
| mGAP | Multilingual Gender-Ambiguous Pronouns. 27 South Asian languages. | coref | mul | TSV | PER | N/A |
| qxoRef | First coreference corpus for Conchucos Quechua. Historically significant as first indigenous coref r | coref | qxo | CoNLL | PER, LOC, ORG | Link |
| re3d (Defense) | Relationship and Entity Extraction Evaluation Dataset for defense domain. | ner | en | BRAT | Person, Organization, Location, Equipment, Event | Link |
| taggedPBC Esperanto | POS-tagged Esperanto from Parallel Bible Corpus. ~1800 sentences with word-level alignment. | ner | eo | CoNLLU | PER, LOC, ORG | Link |
| taggedPBC Klingon | POS-tagged Klingon from Parallel Bible Corpus. OVS word order with complex verbal morphology. | ner | tlh | CoNLLU | PER, LOC, ORG | Link |