- WAPSAM Community Foundation
- Water Relief and Environmental Conservation (WRECO)
- Watoto Network
- Watoto Yatima na Elimu Tanzania (WAYETA)
- Wazo Pevu Organization
- WEMA GROUP
- Widow Women and Orphan Support
- WIDOWERS/WIDOWS AND ORPHANS LEGAL ASSISTANCE IN TANZANIA LTD(WOLAT)
- WIDOWS AND ORPHANED DEVELOPMENT ORGANIZATION
- WIDOWS, ORPHANS AND VULNERABLE CHILDREN IN TANZANIA ( WOVUCTA )