- HIFADHI YA MAZINGIRA NA UTALII RUNGWE (HIMARU) (Rungwe Environmental Conservation and Tourism
- Honeyguide
- HOPE CHRISTIAN FELLOWSHIP PENTECOSTE CHURCH TANZANIA
- HOPE FOUNDATION (2009)
- Human Development Organization
- Human Opportunity on Poverty Eradication
- Human Rights, Environment and Research Organisation
- HumanCare Organization
- HUMULIZA
- HURUMA NATURAL HERITAGE CENTER