| Sikkim Public Service Commission | sikkim | 1096 | |
| Sikkim University | sikkim | 145 | |
| Singareni Collieries Company Limited | telangana | 30 | |
| Singareni Collieries Company Limited | andhra pradesh | 13 | |
| Sjvn Arun-3 Power Development Company Private Limited | himachal pradesh | 52 | |
| Small Farmers Agri - Business Consortium | delhi | 5 | |
| Small Industries Development Bank Of India | uttar pradesh | 7 | |
| Small Industries Development Bank Of India | maharashtra | 5 | |
| Smugglers And Foreign Exchange Manipulators | maharashtra | 12 | |
| Snow & Avalanche Study Establishment, Research & Development Centre | punjab | 12 | |
| Social Defence Department | tamil nadu | 62 | |
| Society for Applied Microwave Electronic Engineering and Research | maharashtra | 3 | |
| Society For Electronic Transactions And Security | tamil nadu | 1 | |
| Society For Integrated Coastal Management | delhi | 2 | |
| Society For Promotion Of Vocational & Technical Education | andaman nicobar islands | 1 | |
| Software Engineering Review Board | madhya pradesh | 1 | |
| Software Technology Parks of India | tamil nadu | 2 | |
| Software Technology Parks of India | delhi | 7 | |
| Soil and Land Use Survey Of India | madhya pradesh | 1 | |
| Soil and Land Use Survey Of India | central government | 10 | |
| Solapur University | maharashtra | 10 | |
| Solar Energy Corporation Of India Limited | delhi | 13 | |
| Solid State Physics Laboratory | delhi | 16 | |
| Sophisticated Test And Instrumentation Centre | kerala | 1 | |
| South Central Zone Cultural Centre | maharashtra | 3 | |