- Companioness Vulneris Association
- Compassionate Heart Ministry (COHEM)
- Concern for Sustainable Development Initiatives
- Concern for Women and Children Development Initiative
- Concern Worldwide -- Iringa
- Continental Youth Watch Development Organization - CYWADO TANZANIA
- COOPERATIVE CULTIVATAIRE DE RIZ DE BUGUGU
- COOPERATIVE TUNOZIBYACU/KINONI
- Corridor Institute - Tanzania
- Counselling and Family Life Organization (CAFLO)