Find an ontology that fits your problem

External

external · fibo-fnd-accounting-accountingequity

Accounting Equity Ontology

This ontology defines equity-related concepts for use in defining other FIBO ontology elements. These are based on basic accounting principles as they relate to equity, debt, assets and liabilities of a firm. Equity forms the basis for ownership of certain forms of corporate body.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-places-addresses

Addresses Ontology

This ontology provides high level definitions for addresses and address components including elements that are common to addressing standards.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-agreements-agreements

Agreements Ontology

This ontology defines the concept of an agreement and roles that parties to an agreement play in the context of financial agreements. Agreements represent an understanding between parties, whereas contracts typically formalize such agreements.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-utilities-analytics

Analytics Ontology

This ontology provides mathematical abstractions for use in other ontologies, including for example the basic components of formulae, parameters and values.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-arrangements-arrangements

Arrangements Ontology

This ontology defines abstract structural concepts, extending the Commons concept of an arrangement to represent schemes.

License: opensource.org/licenses/MIT

External

external · bfo

Basic Formal Ontology 2020

Last published: 2020

Top-level ontology conformant with ISO/IEC 21838-1, providing common upper-level classes and relations such as object, process, continuant, and occurrent.

License: CC BY 4.0

External

external · cs

Changeset Vocabulary

Last published: 2009

Vocabulary for describing additions and removals between versions of RDF resource descriptions.

License: Unspecified

External

external · cito

CiTO, the Citation Typing Ontology

Last published: June 22, 2026

OWL 2 DL ontology for characterizing direct, indirect, and implicit citation links factually and rhetorically, including a reified citation model.

License: creativecommons.org/licenses/by/4.0/legalcode

External

external · fibo-fnd-arrangements-classificationschemes

Classification Schemes Ontology

This ontology defines abstract concepts for representation of industry classification schemes.

License: opensource.org/licenses/MIT

External

external · cco

Common Core Agent Ontology

Last published: November 2024

CCO module for agents and agent-related social, organizational, and role concepts.

License: BSD-3-Clause

External

external · cco

Common Core Artifact Ontology

Last published: November 2024

CCO module for artifacts, designed systems, artifact functions, and artifact-related classifications.

License: BSD-3-Clause

External

external · cco

Common Core Currency Unit Ontology

Last published: November 2024

CCO module for currencies issued and used by countries.

License: BSD-3-Clause

External

external · cco

Common Core Event Ontology

Last published: November 2024

CCO module for events, processes, acts, and event-related relations.

License: BSD-3-Clause

External

external · cco

Common Core Extended Relation Ontology

Last published: November 2024

CCO module for additional relations used across Common Core modules.

License: BSD-3-Clause

External

external · cco

Common Core Facility Ontology

Last published: November 2024

CCO module for facilities and facility-related artifact and site concepts.

License: BSD-3-Clause

External

external · cco

Common Core Geospatial Ontology

Last published: November 2024

CCO module for geospatial regions, locations, and geospatial relations.

License: BSD-3-Clause

External

external · cco

Common Core Information Entity Ontology

Last published: November 2024

CCO module for information content entities, identifiers, documents, plans, and representations.

License: BSD-3-Clause

External

external · cco

Common Core Ontologies

Last published: November 2024

A mid-level ontology suite for agents, artifacts, events, facilities, geospatial entities, information entities, qualities, time, units, currencies, and extended relations.

License: BSD-3-Clause

External

external · cco

Common Core Quality Ontology

Last published: November 2024

CCO module for qualities and quality-related measurement concepts.

License: BSD-3-Clause

External

external · cco

Common Core Time Ontology

Last published: November 2024

CCO module for temporal regions, temporal intervals, and temporal relations.

License: BSD-3-Clause

External

external · cco

Common Core Units of Measure Ontology

Last published: November 2024

CCO module for measurement units and unit-related classifications.

License: BSD-3-Clause

External

external · cpv

Common Procurement Vocabulary (CPV 2008)

Generated local SKOS extract of the EU Common Procurement Vocabulary for procurement-facing product/service classifications.

License: CC BY 4.0

External

external · cmns-annotationvocabulary

Commons Annotation Vocabulary

The Annotation Vocabulary provides commonly used annotation properties for documentation to facilitate understanding. Note that this ontology defines a property hierarchy for a number of external annotations, including SKOS and Dublin Core annotations, to show how they relate to one another, although the semantics of OWL ignore this. Doing so emphasizes how the annotations are intended to be used and assists with integration in cases where different ontologies use different annotations and/or approaches.

License: opensource.org/licenses/MIT

External

external · cmns-businessauthorizations

Commons Business Authorizations Ontology

This ontology defines the concept of authorization from a business perspective, rather than security or access control viewpoint, as a situation or state of affairs, including related parties. It was derived from the FIBO Executives ontology and simplified/adapted for broader use.

License: opensource.org/licenses/MIT

External

external · cmns-classifiers

Commons Classifiers Ontology

This ontology defines abstract concepts for representation of classification schemes that enable the classification of arbitrary concepts into hierarchies (or partial orders) for use in many other ontologies, derived in part from the patterns defined in ISO 1087-1 for terminology work and ISO 11179-3, Metadata Registries.

License: opensource.org/licenses/MIT

External

external · cmns-codesandcodesets

Commons Codes and Code Sets Ontology

This ontology defines commonly used concepts for describing codes, including standardized codes such as ISO language, country, and other code sets, the North American Industry Classification System (NAICS) codes, and custom code sets that many organizations develop for various purposes, derived from the patterns specified in ISO 11179-3, Metadata Registries.

License: opensource.org/licenses/MIT

External

external · cmns-collections

Commons Collections Ontology

The collections ontology defines commonly used concepts for arrangements and schemes for organizing information and collections of things, such as structured collections that may be organized according to some scheme, and related very high level mereology relations to enable association of things with such collections and schemes.

License: opensource.org/licenses/MIT

External

external · cmns-contextualdesignators

Commons Contextual Designators Ontology

The contextual designators ontology extends the designators ontology to incorporate applicable dates and times and facilitate the inclusion of other context that is commonly needed, derived in part from the patterns defined in ISO 11179-3, Metadata Registries.

License: opensource.org/licenses/MIT

External

external · cmns-contextualidentifiers

Commons Contextual Identifiers Ontology

The contextual identifiers ontology defines commonly used concepts for describing more complex identifiers, including those that apply for some period of time as well as those that are structured and include other codes or identifiers.

License: opensource.org/licenses/MIT

External

external · cmns-datesandtimes

Commons Dates and Times Ontology

The dates and times ontology defines commonly used temporal concepts that cover those most frequently needed across domains, with a focus on terminology that is used in business applications. It is designed to be mappable to other date and time ontologies and specifications, such as the W3C Time Ontology in OWL (available at https://www.w3.org/TR/owl-time/), certain temporal elements in BFO 2020 (see https://basic-formal-ontology.org/bfo-2020.html), time concepts defined in schema.org, and the Object Management Group's Date Time Vocabulary (DTV) specification (available at https://www.omg.org/spec/DTV/), without the corresponding overhead or in some cases, issues. The concepts were originally derived from a number of date and time standards including ISO 8601:2004 Representation of Dates and Times. The ontology itself was derived from the Financial Industry Business Ontology (FIBO) Financial Dates ontology, with minor revisions to better reflect requirements for mapping to other ontologies.

License: opensource.org/licenses/MIT

External

external · cmns-designators

Commons Designators Ontology

The designators ontology defines commonly used concepts for naming, derived in part from the patterns defined in ISO 1087 for terminology work and ISO 11179-3, Metadata Registries. It includes several very high level semiotic relationships, including defines, describes, and denotes for associating designators with the concepts they reference.

License: opensource.org/licenses/MIT

External

external · cmns-documents

Commons Documents Ontology

This ontology defines high-level concepts for representation of documents, including legal documents and records, such as a transaction record, purchase history, or payment history. It is deliberately lightweight in order to accommodate mappings to other document and bibliographic ontologies.

License: opensource.org/licenses/MIT

External

external · cmns-identifiers

Commons Identifiers Ontology

The identifiers ontology defines commonly used concepts for describing identifiers and the identification schemes that define them, such as various national and international identifiers for legal entities, financial instruments, and the like, derived from the patterns specified in ISO 11179-3, Metadata Registries.

License: opensource.org/licenses/MIT

External

external · cmns-locations

Commons Locations Ontology

This ontology provides a very high level definition of geographic region and geopolitical entity related concepts, including, but not limited to, countries, sub-country regions such as states and provinces, and municipalities. The representation was derived from a combination of ISO 3166, the UN M49 Region codes, Geonames, the SWIFT registry, the UN FAO and CIA World Factbook, and other sources. It aims to provide a systematic description of the vocabulary used for country and geopolitical entity representation, useful for mapping among the various names and codes for countries and their subdivisions used world-wide, including but not limited to FIPA and International Olympics codes for countries, (based strictly on requirements for business applications, not broader geographic or political uses).The terms defined herein terms are reused by the OMG's LCC controlled vocabulary representing ISO 3166 country and country subdivision codes, and may be mapped to other standards and de facto standards such as those mentioned.

License: opensource.org/licenses/MIT

External

external · cmns-organizations

Commons Organizations Ontology

This ontology defines high-level concepts for organizations, legal entities, and related terms, such as organization membership. It is purposefully underspecified to facilitate mapping to specific organization ontologies, such as the W3C organization ontology, organization from a business (BMM or BPMN) perspective, organization from a records management (RMS) and provenance (PPMN) perspective, and to other models describing organizations.

License: opensource.org/licenses/MIT

External

external · cmns-partiesandsituations

Commons Parties and Situations Ontology

This ontology defines the high-level concepts of parties and the roles they play in various situations.

License: opensource.org/licenses/MIT

External

external · cmns-quantitiesandunits

Commons Quantities and Units Ontology

This ontology provides a core set of concepts for quantities, units, systems of quantities, and systems of units. The most widely accepted, scrutinized, and globally used system of quantities and system of units are the International System of Quantities (ISQ) and the International System of Units (SI). They are formally standardized through [ISO 31] and [IEC 60027]. The harmonization of these two sets of standards into one new set [ISO/IEC 80000] has been published by ISO in 2009 and 2010. This ontology is based on the Object Management Group (OMG)'s SysML standard and on ISO/IEC 80000-1:2009, which refers normatively to the ISO/IEC Guide 99:2007. It is compatible with and can be mapped directly to the OMG Date Time Vocabulary (DTV) Quantities Ontology, the de-facto QUDT ontology representing Units of Measure, Quantity Kinds, Dimensions and Data Types (see http://www.qudt.org/), the Units of Measurement Ontology (UO) ontology available from the BioPortal (https://bioportal.bioontology.org/ontologies/UO) and others, as well as the quantities and units library in the SysML specification.

License: opensource.org/licenses/MIT

External

external · cmns-regulatoryagencies

Commons Regulatory Agencies Ontology

This ontology defines general purpose concepts for representation of regulatory agencies, also known as regulatory authorities or regulators. It was derived from the FIBO Regulatory Agencies, Legal Capacity, and Jurisdictions ontologies and simplified/adapted for broader use.

License: opensource.org/licenses/MIT

External

external · cmns-rolesandcompositions

Commons Roles and Compositions Ontology

This ontology defines the high-level things defining roles, which enable specification of the various participants in something, and the notion of a composition, i.e., relating something that is a specification for a 'whole', such as a product or recipe, to its ingredients or constituents, potentially with respect to some context-specific requirements.

License: opensource.org/licenses/MIT

External

external · cmns-sitesandfacilities

Commons Sites and Facilities Ontology

This ontology provides high-level concepts related to facilities, both virtual and physical, including sites that provide the context for various facilities.

License: opensource.org/licenses/MIT

External

external · cmns-textdatatype

Commons Text Datatype Ontology

The text datatype ontology defines a custom datatype that combines language tagged and plain string values. This text datatype is useful in cases where it is not clear whether string values will be tagged or not, but where it is anticipated that multilingual strings might be appropriate.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-agreements-contracts

Contracts Ontology

This ontology defines the concept of contract and roles that parties to contract play in the context of financial agreements. Coverage includes written contracts which are the concrete evidence of agreements between parties and verbal contracts. Contracts are further broken down into bilateral and transferable contracts, the latter being the basis for most financial instruments, and basic properties of contracts, such as terms and conditions, are also covered.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-accounting-currencyamount

Currency Amount Ontology

This ontology defines currency and monetary amount related concepts for use in defining other FIBO ontology elements. There are two distinct kinds of concepts that correspond to money and amounts: a concrete, actual amount of money, and the monetary measure of something denominated in some currency. These are dimensionally the same but whereas 'money amount' is defined as an amount of money, 'monetary amount' is an abstract monetary measure. The definition of currency provided herein is compliant with the definitions given in ISO 4217. ISO 4217 provides universally applicable coded representations of names of currencies and funds, used internationally for financial transaction support. The ontology has been partitioned into 2 parts: (1) the essential concept system describing the standard (this module), and (2) ISO4217-1-CurrencyCodes, which contains all of the individuals specified in ISO 4217.

License: opensource.org/licenses/MIT

External

external · dcat

Data Catalog Vocabulary Version 3

Last published: August 2024

Datasets, distributions, catalogs, data services, and discoverability metadata.

License: W3C Document License

External

external · dpv

Data Privacy Vocabulary

Last published: February 25, 2026

Vocabulary for expressing privacy and data protection information, including data, processing, purposes, legal bases, measures, risks, rights, and rules.

License: www.w3.org/copyright/document-license-2023/

External

external · dcterms

DCMI Metadata Terms

Last published: 2020

Basic resource metadata such as title, description, creator, date, source, license, and version relations.

License: DCMI Terms and Documentation

External

external · fibo-fnd-arrangements-documents

Documents Ontology

This ontology defines abstract concepts for representation documents for use in other FIBO ontology elements.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-utilities-annotationvocabulary

FIBO Annotation Vocabulary

This vocabulary provides a set of metadata annotations for use in describing FIBO ontology elements. The annotations extend properties defined in the OMG's Commons Ontology Library (Commons) Annotation Vocabulary, in the Dublin Core Metadata Terms Vocabulary and in the W3C Simple Knowledge Organization System (SKOS) Vocabulary, and have been customized to suit the FIBO specification development process. Note that any of the original properties provided in Dublin Core and SKOS can be used in addition to the terms provided herein. However, any Dublin Core terms that are not explicitly defined as OWL annotation properties in this ontology or in any of its imports must be so declared in the ontologies that use them.

License: opensource.org/licenses/MIT

External

external · fibo-be-le-fbo

FIBO Formal Business Organizations Ontology

FIBO business entities ontology for formal business organizations.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-org-fm

FIBO Formal Organizations Ontology

FIBO foundation ontology for formal organizations used in financial business applications.

License: opensource.org/licenses/MIT

External

external · fibo-be-le-lp

FIBO Legal Persons Ontology

FIBO business entities ontology defining legal personhood concepts.

License: opensource.org/licenses/MIT

External

external · fibo-be-le-lei

FIBO LEI Entities Ontology

FIBO ontology for Legal Entity Identifier entities and identifier schemes.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-datesandtimes-financialdates

Financial Dates Ontology

This ontology provides definitions of date and schedule concepts for use in other FIBO ontologies.

License: opensource.org/licenses/MIT

External

external · foaf

FOAF Vocabulary

Last published: 2014

People, organizations, accounts, names, documents, and social-web identity terms.

License: Creative Commons Attribution

External

external · gleif-base

GLEIF Base Ontology

Generic GLEIF entity, legal person, relationship, registry, address, status, and event terms.

License: www.gleif.org/en/meta/lei-data-terms-of-use/

External

external · gleif-elf

GLEIF Entity Legal Form Ontology

GLEIF ontology for entity legal form data.

License: www.gleif.org/en/meta/lei-data-terms-of-use/

External

external · gleif-L1

GLEIF Level 1 Ontology

GLEIF Level 1 who-is-who ontology for legal entity identifier reference data.

License: www.gleif.org/en/meta/lei-data-terms-of-use/

External

external · gleif-L2

GLEIF Level 2 Ontology

GLEIF Level 2 who-owns-whom ontology for legal entity relationship and consolidation records.

License: www.gleif.org/en/meta/lei-data-terms-of-use/

External

external · gleif-ra

GLEIF Registration Authority Ontology

GLEIF ontology for registration authority records and codes.

License: www.gleif.org/en/meta/lei-data-terms-of-use/

External

external · gr

GoodRelations Ontology

Last published: 2011

E-commerce, offers, prices, products, business entities, and web commerce semantics.

License: Creative Commons Attribution 3.0

External

external · fibo-fnd-arrangements-identifiersandindices

Identifiers and Indices Ontology

This ontology defines abstract concepts for representation of indices and indexing schemes, as well as reusable identifiers, for reuse in other ontologies.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-law-legalcapacity

Legal Capacity Ontology

This ontology defines high-level legal concepts related to legal responsibilities. The ontology defines things which are conferred upon some entity by some legal instrument, and elaborates this into a number of specific capacities, responsibilities and powers, each of which forms the basis for many of the concepts used elsewhere in FIBO in defining legal personhood, executive powers and the like.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-law-legalcore

Legal Core Ontology

This ontology defines high-level legal concepts for use in other FIBO ontology elements. These concepts include law and constitution, both of which are framed at a more abstract level than national or state laws and constitutions, so that law forms the basis both for statutes and for company by-laws, and constitution forms the basis both for national or state constitutions and for instruments which are constitutive of incorporated legal entities. This ontology also defines some of the variants of these such as governmental constitutions and ordinances. Court of Law is also defined here.

License: opensource.org/licenses/MIT

External

external · mod

Metadata for Ontology Description and Publication Ontology

Last published: December 2025

MOD 3.2 describes metadata for ontologies, vocabularies, and other semantic artefacts.

License: CC BY 4.0

External

external · fibo-fnd-goalsandobjectives-objectives

Objectives Ontology

This ontology defines concepts including goal, objective, program, and strategy. Objectives are defined as being distinct from goals, in that they constitute time limited and measurable targets which some entity may seek to attain in pursuit of its goals.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-datesandtimes-occurrences

Occurrences Ontology

This ontology extends definitions of date and schedule concepts from the FinancialDates ontology with concepts defining occurrences (i.e., event-related concepts) for use in other FIBO ontologies.

License: opensource.org/licenses/MIT

External

external · owl

OWL 2 Schema Vocabulary

Last published: 2009

Built-in OWL 2 classes and properties that form the vocabulary basis for OWL ontologies and RDF/XML OWL syntax.

License: W3C Document License

External

external · fibo-fnd-ownershipandcontrol-ownership

Ownership Ontology

This ontology defines high-level, ownership-related concepts, including owner, asset and ownership along with relationships between them.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-parties-parties

Parties Ontology

This ontology extends the Commons Parties and Situations ontology with identifiers for party roles and very general tax identifiers.

License: opensource.org/licenses/MIT

External

external · fibo-fnd-agentsandpeople-people

People Ontology

This ontology defines concepts for people and human related terms, for use in other FIBO ontology elements. People as defined here are human persons only. This ontology sets out a number of basic properties which are held by people or are definitive of a small number of specific types of people such as minors or adults. Primary use cases for determining the set of personal information definitions included are the common elements required to (1) open a bank account, (2) identify a sophisticated investor, and (3) establish foreign account ownership for money laundering purposes.

License: opensource.org/licenses/MIT

External

external · pd

Personal Data Categories

Last published: February 25, 2026

DPV extension providing additional categories of personal data.

License: www.w3.org/copyright/document-license-2023/

External

external · prov

PROV-O: The PROV Ontology

Last published: 2013

Provenance, derivation, generation, attribution, activity, agent, and entity modeling.

License: W3C Document License

External

external · qudt

QUDT Schema

Last published: June 25, 2026

Quantities, units, dimensions, and data types schema used for unit and quantity-kind interoperability.

License: CC BY 4.0

External

external · rr

R2RML Vocabulary

Last published: 2012

RDB to RDF Mapping Language vocabulary for describing mappings from relational databases to RDF datasets.

License: creativecommons.org/licenses/by/3.0/

External

external · rdfs

RDF Schema Vocabulary

Last published: December 2024

RDF Schema classes and properties for describing RDF vocabularies, including resources, classes, literals, subclass and subproperty relationships, domains, ranges, labels, and comments.

License: W3C Document License

External

external · fibo-fnd-relations-relations

Relations Ontology

This ontology defines a set of general purpose relations for use in other FIBO ontology elements. These include a number of properties required for reuse across the foundations and business entities models.

License: opensource.org/licenses/MIT

External

external · rml

RML: Generic Mapping Language for RDF

Last published: 2014

Original RML vocabulary for describing mappings from heterogeneous structured sources such as CSV, TSV, XML, and JSON to RDF.

License: creativecommons.org/licenses/by/3.0/

External

external · schema

Schema.org Vocabulary

Last published: March 19, 2026

Broad web vocabulary for organizations, products, offers, events, creative works, actions, and structured data.

License: CC BY-SA 3.0

External

external · skos

SKOS Simple Knowledge Organization System

Last published: 2009

Taxonomies, concept schemes, controlled vocabularies, broader/narrower relations, and labels.

License: W3C Document License

External

external · sd

SPARQL Service Description Vocabulary

Last published: April 23, 2026

W3C vocabulary for describing SPARQL services, RDF datasets, default graphs, and named graphs.

License: W3C Document License

External

external · spdx

SPDX 3.0.1 RDF Model

Last published: December 2024

Software supply chain, licensing, security, SBOM, package, dataset, build, and AI artifact metadata.

License: Community Specification License 1.0

External

external · cpa22

Statistical classification of products by activity, 2.2 (CPA 2.2)

Generated local SKOS extract of Eurostat CPA 2.2 for product/service offering classifications.

License: CC BY 4.0

External

external · org

The Organization Ontology

Last published: 2014

W3C vocabulary for organizational structures, memberships, roles, posts, sites, and organizational change events.

License: W3C Document License

External

external · time

Time Ontology in OWL

Last published: 2017

W3C/OGC ontology for temporal instants, intervals, durations, and temporal reference systems.

License: CC BY 4.0

External

external · voaf

Vocabulary of a Friend

Last published: 2013

VOAF describes RDF vocabularies and relationships between vocabularies.

License: creativecommons.org/licenses/by/3.0/

External

external · oa

Web Annotation Ontology

Last published: 2016

W3C vocabulary for representing annotations, comments, textual bodies, motivations, targets, selectors, and states on web resources.

License: W3C Document License

External

external · jsonschema

Web of Things JSON Schema Ontology

W3C Web of Things ontology for representing JSON Schema data constraints in RDF.

License: purl.org/NET/rdflicense/cc-by4.0