- Washindi Kwenye Mapambano ya UKIMWI
- Watoto Network
- Watoto Yatima na Elimu Tanzania (WAYETA)
- WEMA GROUP
- WHIN EMPOWERMENT
- White Dow
- WIDOWS, ORPHANS AND VULNERABLE CHILDREN IN TANZANIA ( WOVUCTA )
- Wilunze Group (CBO) Hazina
- WINGS ENVIRONMENT AND EDUCATION TRANSFOMATION UNITY
- WIRWANA ASSOCIATION FOR EMPOWERMENT AND DEVELOPMENTS (WAENDELEE)