| Institute Pierre Simon Laplace (IPSL) | Academic Institution | | |
| Instituto de Ciencia y Tecnología Agrícolas (ICTA) | Advanced Research Institution | Latin America | Climate-Smart Technologies and Practices |
| Instituto de Hidrología, Meteorología y Estudios Ambientales de Colombia (IDEAM) | Government office/department | Latin America | Low Emissions Development |
| Instituto de Investigação Agrária de Moçambique (IIAM) | Government office/department | | |
| Instituto de Investigación Agropecuaria de Panamá (IDIAP) | National agricultural research and extension services | Latin America | Climate-Smart Technologies and Practices |
| Instituto de Investigaciones Agropecuarias (INIA) | National agricultural research and extension services | Latin America | Climate-Smart Technologies and Practices |
| Instituto de Investigaciones de la Amazonia Peruana (IIAP) | Government office/department | Latin America | Climate-Smart Technologies and Practices, Low Emissions Development |
| Instituto de Manejo e Certificação Florestal e Agrícola (IMAFLORA) | Non-governmental organization/Development organization | Latin America | Low Emissions Development |
| Instituto Geográfico Agustín Codazzi (IGAC) | Government office/department | Latin America | |
| Instituto Interamericano de Cooperacion para la Agricultura (IICA) | Research network | Latin America | Climate-Smart Technologies and Practices |
| Instituto Nacional de Gestão de Calamidades (INGC) | Government office/department | | |
| Instituto nacional de innovacion agraria (INIA) | Government office/department | Latin America | |
| Instituto Nacional de Innovación Agropecuaria y Forestal (INIAF) | National agricultural research and extension services | Latin America | Climate-Smart Technologies and Practices |
| Instituto Nacional de Investigacion Agropecuaria (INIA) | National agricultural research and extension services | Latin America | |
| Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias (INIFAP) | Advanced Research Institution | Latin America | Climate-Smart Technologies and Practices |
| Instituto Nacional de Tecnología Agropecuaria (INTA) | National agricultural research and extension services | Latin America | Climate-Smart Technologies and Practices |
| Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA) | Advanced Research Institution | Latin America | Climate-Smart Technologies and Practices |
| Integrated Partnerships for Community Prosperity (IPACOP) | Non-governmental organization/Development organization | East Africa | Climate-Smart Technologies and Practices |
| Inter-American Development Bank (IDB) | Donors | | |
| Inter-American Institute for Cooperation on Agriculture | | | |
| Intergovernmental Panel on Climate Change (IPCC) | Government office/department | | Low Emissions Development |
| Intergovernmental Science-Policy Platform on biodiversity and Ecosystem Services (IPBES) | Other | | Climate-Smart Technologies and Practices |
| International Center for Agricultural Research in the Dry Areas (ICARDA) | CGIAR Center | | Climate-Smart Technologies and Practices |
| International Center for Climate Change and Development (ICCCAD) | Academic Institution | South Asia | |
| International Center for Tropical Agriculture (CIAT) | | | |
