| Organization | Description | Standards Used | Sector |
|---|---|---|---|
| IATA | Enabler of an Airline Industry Open Data Ecosystem | OpenAPI v3.0, OpenAPI Program | Transport |
| Open Geospatial Consortium | OGC Standards are internationally recognized specifications that let different systems exchange information seamlessly. They are organized by functional area (e.g., data discovery, organization). The functional capabilities of the Web Service Standards are now available as more modern web APIs. | OpenAPI v3.0, OGC API - Common | Geospatial |
| Transport Operator Mobility-as-a-service Provider (TOMP) | The TOMP working group aims to develop and sustain an internationally governed interoperable open standard for technical communication between Transport Operators and MaaS Providers, by means of definition, improvement, alignment and dissemination. | OpenAPI v3.0, TOMC WG API | Transport |
| Open Banking UK | The Open Banking Standard's Read/Write Data API Profile provides a description of the elements that are common across all the Read/Write Data APIs. | OpenAPI v3.0, Read/Write API standard | Banking/Finance |
| OpenEHR | Open industry specifications, models and software for e-health | OpenAPI v3.0, OpenAPI specifications | Health |
| WIPO World Intellectual Property Organisation | WIPO's API Standards include a standard for publishing an API specification but does not mention that this should be OpenAPI in particular, but encouarges OpenAPI version 3 with national IP offices and uses OpenAPI to automate their API catalog | ST 90 API standards(https://www.wipo.int/export/sites/www/standards/en/pdf/03-90-01.pdf) | Intellectual Property |
| DCSA - Digital Container Shipping Association | The DCSA provides a range of API standards and documents each using OpenAPI. The standards note that Open API 3.0.x MUST be used to document APIs. | OpenAPI v3.0.3, DCSA API Design Principles 1.1 | Logistics |
| UK Government | UK Government standards for people building Application Programming Interfaces (APIs) in government | "The OpenAPI Specification is a standardised way of describing RESTful web APIs, and is recommended by the government Open Standards Board." No specific version is noted.API technical and data standards | Government |