- Aam Trust, Thanjavoure
- ADAM, Kumbakonam
- AMMA – Annai Medical Manpower Academy, Thanjavur
- Annai Sathya Voluntary Service Society, Thanjavur
- Arasu Educational and Charitable Trust, Thanjavour
- Bhagavata Mela Foundation, Thanjavur
- Centre for Ecology & Research, Thanjavur
- Dalithkural & Tamil Nadu Arivar Ambedkar Maiyam Trust, Thanjavur
- Deepam Trust, Thanjavur
- Dheebam Welfare Trust, Thanjavur
- Divya Trust, Thanjavur
- Indian Institute of Development, Thanjavur
- Jeevarethinam Memorial Turst, Thanjavur
- Junior Chamber International Pattukkottai, Thanjavur
- Krishnaveniyammal Memorial Social & Educational Charitable Trust, Thanjavur
- M R Educational & Charitable Trust, Thanjavur
- Madha Group of Education, Thanjavur
- Mahatma Educational Trust, Thanjavur
- Nesappriyam Educational & Social Trust, Thanjavur
- Regional Exnora, Thanjavur
- Rudra Charitable Trust, Thanjavur
- Scuba Social Service Organization, Thanjavur
- Shamarppanam Social Welfare Trust, Thanjavur
- Sudar Academy and Charitable Trust, Thanjavur
- Sudare Foundation, Thanjavur
- Tamilbarathi Social Welfare Organaisation, Thanjavur
- Universel Consumer Awareness Trust, Thanjavur
- Valli Social Public Charitable Trust, Thanjavur
- Voluntary Trust for Services, Thanjavur