| African Wildlife Foundation | | Member |
| Arusha Archdiocesan Integrated Dev.& Relief | AAIDRO | Member |
| Arusha Community Initiative Support Trust | ACIST | Member |
| Business and Entrepreneurship Support Tanzania | BEST | Member |
| Community Action for Development and Environmental Conservation Trust | CADECT | Member |
| Community Aid & Small Enterprises Consultancy | CASEC | Member |
| Community Environmental Conservation Association | COMECA | Member |
| Community Research and Development Services | CORDS | Member |
| Compassion International | | Member |
| David Red Trust | DRT | Member |
| Environmental Press Foundation | | Member |
| Green Arusha Society | | Member |
| Hakikazi Catalyst | | Member |
| Heifer Project Tanzania | | Member |
| Hifadhi Mazingira Karatu | HIMAKA | Member |
| Ilaramatak Lorkonerei | | Member |
| Informal Sector Trust | INSERT | Member |
| Integrated Program for Pastoralists Development-IPPD | | Member |
| Irkisongo Pastoralist Initiatives | IPI | Member |
| Karatu Development Association | KDA | Member |
| Karatu Trust Fund | KTF | Member |
| KIPOC | | Member |
| Land Development Organization | LADO | Member |
| Maasai Advance Organization | | Member |
| Maasai Women Development Organization | MWEDO | Member |
| Mazingira Bora Karatu | MBK | Member |
| Mazingira Bora Karatu | MBK | Member |
| NGPADED | | Member |
| Nsamama Enviromental Conservation Association | | Member |
| Osotwa Development Organization | ODO | Member |
