| Norwegian Institute for International Affairs (NUPI) | Advanced Research Institution | | |
| Norwegian University of Science and Technology (NTNU) | Academic Institution | | |
| NSW Trade & Investment | Advanced Research Institution | | Desarrollo bajo en emisiones |
| Office du Niger (ON) | Non-governmental organization/Development organization | África del oeste | Servicios de información climática |
| Office of Livestock & Pasture (OEP) | National agricultural research and extension services | | |
| Oficina Nacional de Semillas (ONS) | Government office/department | América Latina | Tecnologías y prácticas ASAC |
| Oregon State University (OSU) | Academic Institution | | Tecnologías y prácticas ASAC |
| Organization of Economic Cooperation and Development (OECD) | Non-governmental organization/Development organization | | |
| Orissa University of Agriculture & Technology | Academic Institution | Sur de Asia | |
| Oromia Insurance Company | Donors | África del este | Servicios de información climática |
| Oromiya Credit and Savings Share Company (OCSSC) | Other | África del este | |
| Oromiya Insurance Company (OIC) | Other | África del este | Servicios de información climática |
| Oromiya Pastoral Area Development Commission (OPADC) | Government office/department | África del este | |
| Oxfam Great Britain | Non-governmental organization/Development organization | | |
| Oxfam Novib | Non-governmental organization/Development organization | | Tecnologías y prácticas ASAC |
| Oxfam, Horn of Africa Regional Office | Non-governmental organization/Development organization | África del este | |
| Pakistan Agricultural Research Coucnil (PARC) | National agricultural research and extension services | Sur de Asia | Tecnologías y prácticas ASAC, Servicios de información climática |
| Palli Karma-Sahayak Foundation (PKSF) | Non-governmental organization/Development organization | Sur de Asia | Servicios de información climática |
| Pamoja Media | Other | África del este | |
| Panafrican Farmers' Organization | | | |
| Panos Eastern Africa | Regional Organization | África del este | |
| Panos South Asia | Regional Organization | Sur de Asia | |
| Parivartan | Non-governmental organization/Development organization | Sur de Asia | Servicios de información climática |
| Pathikrit | Non-governmental organization/Development organization | Sur de Asia | |
| Pennsylvania State University | Academic Institution | | Servicios de información climática |
