- NYANZA FOLKLORE RESEARCH INSTITUTE
- Nyanza Legal Aid
- NYENGEDI ENVIRONMENT DEVELOPMENT AND DISEASES CONTROL
- NYUKI WETU TANZANIA
- Oblige for Vulnerable Children Tanzania [OVCT]
- OCODE - Organization for Community Development
- OKOA COMMUNITY RELIEF SERVICES
- Old Nguvumali Women Centre
- One Light - Rwanda
- One World One Love Foundation