| Amhara Regional Agricultural Research Institute (ARARI) | National agricultural research and extension services | East Africa | Climate Services and Safety Nets |
| Amsterdam Optimization Modeling Group (AOM) | Private Research Institution | | |
| Ankara Genbank (AGB) | National agricultural research and extension services | | Climate-Smart Technologies and Practices |
| Applied Geosolutions, LLC (AGS) | Private Research Institution | | Low Emissions Development |
| Arba Minch University (AMU) | Academic Institution | East Africa | Climate-Smart Technologies and Practices |
| Arid Lands Information Network (ALIN) | Non-governmental organization/Development organization | East Africa | |
| Arizona State University (ASU) | Academic Institution | | Priorities and Policies for CSA |
| Ashok Sansthan | Non-governmental organization/Development organization | South Asia | Climate-Smart Technologies and Practices |
| Asia Risk Centre (ARC) | Private Research Institution | | Climate Services and Safety Nets |
| Asia-Pacific Association of Agricultural Research Institutions (APAARI) | Regional Organization | Southeast Asia | |
| Asian Development Bank (ADB) | Donors | Southeast Asia | Climate-Smart Technologies and Practices |
| Asociación Coordinadora Indígena y Campesina de Agroforestería Comunitaria de Centroamérica (ACICAFOC) | Non-governmental organization/Development organization | | Priorities and Policies for CSA |
| Asociación de Cacaoteros Tecnificados de Padre Abad (ACATPA) | Non-governmental organization/Development organization | Latin America | Climate-Smart Technologies and Practices |
| Asociación de organizaciones de los Chuchumatanes (Asocuch) | Non-governmental organization/Development organization | Latin America | Climate-Smart Technologies and Practices |
| Asociación Regional Campesina Ch'orti' (ASORECH) | Asociación Civil | Latin America | Priorities and Policies for CSA, Climate-Smart Technologies and Practices, Low Emissions Development, Climate Services and Safety Nets, Gender and Social Inclusion, Scaling Climate-Smart Agriculture |
| Association for strengthening Agricultural Research in Eastern and Central Africa (ASARECA) | Regional Organization | East Africa | Climate-Smart Technologies and Practices, Climate Services and Safety Nets |
| Association Malienne d'Eveil au Developpement Durable (AMEDD) | Non-governmental organization/Development organization | West Africa | Low Emissions Development |
| Association Nourir Sans Détruire (ANSD) | Academic Institution | West Africa | |
| Association of Agricultural Research Institutions in the Near East and North Africa (AARINENA) | Regional Organization | | Climate-Smart Technologies and Practices |
| Association of Biotechnology Led Enterprises (ABLE) | Non-governmental organization/Development organization | South Asia | Climate Services and Safety Nets |
| Association of South East Asian Nations (ASEAN) | Regional Organization | | Priorities and Policies for CSA |
| Atomic Energy Commission (CEA) | Advanced Research Institution | | |
| Australian Agency for International Development (AUSAID) | Government office/department | | Low Emissions Development |
| Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES) | Government office/department | | |
| Azerbaijan National Academy of Sciences (ANAS) | National agricultural research and extension services | | Climate-Smart Technologies and Practices |
