- Subhash Chandra Human Research & Development Foundation, Kolkata
- Subhash Children Society, Kanpur
- Subhash Yuva Mandal, Gwalior
- Subhechha Health Welfare Society, Purba Medinipur
- Subhiksha Development Foundation, Turuvekere
- Subho Swapno International Educational Development Charitable Trust, Kolkata
- Subodh Prasad Foundation, New Delhi
- Subodh Shiksha & Samaj Utthan Samiti, Sagar
- Subodh Tree, New Delhi
- Subramanyam Abel Fostering Empathizeres(SAFE), Medak
- Subserve Society, Kanpur
- Success Academic Club, Dehradun
- Success Computer Saksharta Mission (SCSM), Harirampur
- Success Educational Institute and Welfare Society, Mirzapur
- Success Foundation, Delhi
- Sucheta Kriplani Gram Vikas Sanstan, Jodhpur
- Suchetana Gramin Unnayan Samiti, Bardhaman
- Suchetana Society, South Tripura
- Sudam Shikshan Prasarak Mandal, Amravati
- Sudama Memorial Society, Lucknow
- Sudar Academy and Charitable Trust, Thanjavur
- Sudar Foundations, Madurai
- Sudar Oli Seva Centre, Pondicherry
- Sudar Parvai Makkal Iyakam, Coimbatore
- Sudare Foundation, Thanjavur
- Sudarshan Seba Sangha, Nabadwip
- Sudeep Education Society, Bhopal
- SUDHA – Society for Upliftment & Development of Human Beings by Action, Gurgaon
- Sudha Charytable Foundation, Kanpur Nagar
- Sudha Kiran Sewa Samiti, Deoria
- Sudha The Nectar, Gurgaon
- Sudhar Jankalyan Shiksha Sameete, Bareilly
- Sudhar Sabha, Ajmer
- SUDHAR, Bharatpur
- Sudheekshan Foundation, Vijayawada
- Sudi Unnayan Samity, South 24 Parganas
- Sudisha Social Service Society, Karimnagar
- Sudura Sarathi, Cuttack
- SUEF, Delhi
- Sugam Jan Sewa Samiti, Shahdol
- Sugam Rural Development Trust, Sathyamangalam
- Sugana Sewa Samiti, Barabanki
- Sugata Bhaumik Smriti Sanrakshan Samiti, Hooghly
- SUGRAMA – Grama Panchayat Chunayitha Mahila Pratinidhigala Sangha – Karnataka, Bangalore
- Suhini Publication, Jaipur
- Sujan Foundation, Gandhinagar
- Sujata Maghaawargiya Mahila Mandal, Jalna
- Sujata Welfare Society, Nasik
- Sujatha Educational and Rural Development Society, Krishna
- Sujeet Choudhary Foundation, Begusarai
