- Abhas Spandan, Siwan
- Amit Welfare Trust, Siwan
- Association of Limretech Social Development (ALSD), Siwan
- Babu Bacha Singh Samaj Kalyan Society, Siwan
- Bharat Swabhimaan, Siwan
- Centre for Youth Development, Siwan
- Deepa Devi Manav Kalyan Sansthan, Siwan
- Global Human Development Organization, Siwan
- Manav Utthan Seva Ashram, Siwan
- Rang-Preet, Siwan
- SAWAN, Siwan
- SPEED, Siwan
- Stuti-Vani Foundation, Siwan
- Usha A Hope, Siwan
- Vikas Sarthi, Siwan
- Vridh Sah Jansewa Samiti, Siwan