- Union of Non Governmental Organizations (UNGO)
- UNION OF NON GOVERNMENTAL ORGANIZATIONS KILOSA
- Unite TZ Children
- UNIVERSAL MINISTRY OF AFRICA INTERNATIONAL
- UPENDO CARE AND COUNSELING
- URBAN ENVIRONMENTAL DEVELOPMENT ASSOCIATION
- usambara community
- UTAWALA BORA KWA MAENDELEO (UBOMA)
- UTUNZAJI WA MAZINGIRA MBINU MBALA
- uwazi arts promotion