- Supporting Rural Youths' Development(SRYD)
- SUPREME
- Sustainable Community Development Initiatives Association
- Sustainable Invetsments and Development Iniatiatives (SIDI)
- Sustainable Rural Agriculture
- SUSTANABLE WATCH ON MARGINAL COMMUNITIES
- T
- TAASISI YA KUPAMBANA NA UKIMWI KITANGARI
- TABORA PARALEGAL CENTRE
- Tambani Rural Community Development Fund