| Bureau of Agricultural Research (Philippines) (BAR) | Government office/department | Southeast Asia | |
| CABI (CABI) | Non-governmental organization/Development organization | | Priorities and Policies for CSA, Climate-Smart Technologies and Practices |
| Cagayan Valley People's Programme on Environment and Development (CAVAPPED) | Non-governmental organization/Development organization | Southeast Asia | Climate-Smart Technologies and Practices, Climate Services and Safety Nets |
| Cambodia Agricultural Value Chain Program (CAVAC) | Private research institution | | Priorities and Policies for CSA |
| Cambodian Agricultural Research and Development Institute (CARDI) | Government office/department | Southeast Asia | Climate-Smart Technologies and Practices |
| Cambodian Centre for Study and Development in Agriculture (CEDAC) | Non-governmental organization/Development organization | Southeast Asia | Low Emissions Development |
| Cambodian Institute for Cooperation and Peace (CICP) | Academic institution | | Priorities and Policies for CSA |
| Cantho University | Academic institution | Southeast Asia | Priorities and Policies for CSA, Climate-Smart Technologies and Practices, Low Emissions Development |
| CARE | | | |
| Caritas Kenya | Non-governmental organization/Development organization | East Africa | Climate-Smart Technologies and Practices |
| Catholic Relief Services (CRS) | Non-governmental organization/Development organization | | Climate-Smart Technologies and Practices, Low Emissions Development |
| Catholic University of East Africa | Academic Institution | East Africa | Climate-Smart Technologies and Practices |
| CCS Haryana Agricultural University | Academic Institution | South Asia | Climate Services and Safety Nets, Low Emissions Development |
| Center for Agro-food Economy and Development (CREDA) | Non-governmental organization/Development organization | | Climate Services and Safety Nets |
| Center for Cagayan Valley Programme on Environment and Development (CCVPED) | Advanced Research Institution | Southeast Asia | Climate-Smart Technologies and Practices, Climate Services and Safety Nets |
| Center for Development and Environment - University of Bern (CDE) | Academic Institution | | |
| Center for Environmental and Agricultural Policy Research, Extension and Development (CEAPRED) | Non-governmental organization/Development organization | South Asia | Climate Services and Safety Nets |
| Center for Environmental and Geographic Information Services (CEGIS) | Government office/department | South Asia | Climate Services and Safety Nets |
| Center for International Forestry Research (CIFOR) | CGIAR Center | East Africa, West Africa, Latin America, Southeast Asia, South Asia | Priorities and Policies for CSA, Climate-Smart Technologies and Practices, Low Emissions Development, Climate Services and Safety Nets |
| Central Asian Scientific Research Institute for Irrigation (SANIIRI) | National agricultural research and extension services | | |
| Central Potato Research Institute (CPRI) | National agricultural research and extension services | South Asia | Climate-Smart Technologies and Practices |
| Central Research Institute for Dryland Agriculture (CRIDA) | National agricultural research and extension services | South Asia | Climate Services and Safety Nets |
| Central Soil Salinity Research Institute (CSSRI) | National agricultural research and extension services | South Asia | Low Emissions Development |
| Central Tuber Crops Research Institute (CTCRI) | Academic Institution | South Asia | |
| Centre Béninois pour l'Environnement et le Développement Economique et Social (CEBEDES) | Non-governmental organization/Development organization | West Africa | |
