| aadhunik global energy, India | Other Organization Type |
| Absons Exim (PVT) Ltd | Other Organization Type |
| Academy for Educational Development (AED) | Non-Governmental Organization |
| AED BANGLADESH | Non-Governmental Organization |
| Aegis Limited, Essar Group | Private Industry |
| Africa Institute of Water Governance | Other Organization Type |
| African Center for Renewable Energy and Sustainable Technologies | Non-Governmental Organization |
| African Christians Organization Network | Independent Consultant |
| African Clean Energy Pty LTD | Private Industry |
| African Green Footprints | Private Industry |
| Aga Khan Planning and Building Service, Pakistan | Non-Governmental Organization |
| Agencia Adventista para el Desarrollo y Recursos Asistenciales. ADRA Perú | Non-Governmental Organization |
| AHEAD Energy | Non-Governmental Organization |
| Aid Africa | Non-Governmental Organization |
| Aid Organization (AO) | Non-Governmental Organization |
| Air Resource Management Center (AirMAC), Ministry of Environment & Natural Resources | Government |
| Airbase Systems | Private Industry |
| Albertine Renewable Energy Technologists | Carbon Project Developer |
| Alison Doig | Non-Governmental Organization |
| All Nations Christian Care | Non-Governmental Organization |
| Alpha Renewable Energy Pvt. Ltd | Private Industry |
| Alternative Energy Promotion Centre/Energy Sector Assistance Programme (AEPC/ESAP) | Government |
| Amen Ministries | Academia |
| ANOMENA VENTURES | Private Industry |
| APORTES | Carbon Project Developer |
| Appropriate Rural Technology Institute (ARTI) | Non-Governmental Organization |
| Appropriate Rural Technology Institute Tanzania | Other Organization Type |
| Appropriate Technologies for Rural Women, Cameroon (ATRuW-Cameroon) | Non-Governmental Organization |
| Approriate Technology Energy [ATE] | Non-Governmental Organization |
| Approtech Asia | Non-Governmental Organization |
| Aprovecho Research Center | Non-Governmental Organization |
| Asia Regional Cookstove Program | Non-Governmental Organization |
| Asia-Pacific Research Center for Indoor Environment | Non-Governmental Organization |
| Asociacion Benefica PRISMA | Non-Governmental Organization |
| Asociacion Civil Cusco Verde | Non-Governmental Organization |
| Asociación Hondureña para el Desarollo (AHDESA) | Non-Governmental Organization |
| ASOFATE-CTDP | Private Industry |
| Asrayyan Sheba Sangstha (ASS) | Non-Governmental Organization |
| Associação de Credito Popular | Non-Governmental Organization |
| Association for Reduction in Indoor Air Pollution (ARIP) | Multilateral |
| Association pour la Recherche et la Promotion de l’Energie Durable en Afrique Centrale (ARPEDAC) | Non-Governmental Organization |
| atmosfair | Non-Governmental Organization |
| Atmospheric Research and Information Analysis Laboratory (ARIAL), Centre for Energy Research and Development (CERD) | Academia |
| Banaspati Gueetha Resource Center Network, Nepal (BG-RCNN) | Non-Governmental Organization |
| Bangladesh Association for Social Advancement (BASA) | Non-Governmental Organization |
| Bangladesh Centre for Advanced Studies (BCAS) | Non-Governmental Organization |
| Bangladesh Integrated Social Advancement Programme (BISAP) | Non-Governmental Organization |
| BARAL foundation for environment & sustainable development | Non-Governmental Organization |
| Barendra Advancement Integrated Committee (BAIC) | Non-Governmental Organization |
| Barts and the London School of Medicine and Dentistry | Academia |
