- WOMEN ENVIRONMENT CONSERVATION ASSOCIATION
- World Wide Opportunities on Organic Farms (WWOOF Tanzania)
- YOUNG ENTREPRENEURS TANZANIA (YET)
- Youth Development Society (YODESO)
- Youth Initiative Project (YIP)
- Zanzibar Association for Farmers and Fishermen Developments
- Zanzibar Birds Conservation Project
- Zanzibar Civil Society Alliance on Climate Change (ZACCA)
- ZANZIBAR ECO-TOURISM
- ZANZIBAR ENVIRONMENTAL SOCIETY FOR THE PROTECTION OF ANIMALS (ZESPA)