- Concern Worldwide -- Iringa
- CONNECTING BUSINESS COMPANY
- Continental Youth Watch Development Organization - CYWADO TANZANIA
- COOPERATION,DEVELOPMENT AND DELIVERANCE FOUNDATION(CDDF)
- COOPERATIVE CULTIVATAIRE DE RIZ DE BUGUGU
- Cooperative de Tissage de Nyanza
- Cooperative for Agricultural Products Marketing
- Cooperative Kunda umurimo
- COOPERATIVE TUNOZIBYACU/KINONI
- Corridor Institute - Tanzania