| Institute of Rural Management | gujarat | 3 | |
| Institute of Secretariat Training and Management | delhi | 5 | |
| Institute of Seismological Research | gujarat | 1 | |
| Institute Of Serology | west bengal | 4 | |
| Institutional Strengthening of Gram Panchayats Project | west bengal | 1 | |
| Instrumentation Limited | kerala | 1 | |
| Integral Coach Factory | tamil nadu | 4 | |
| Integrated Coastal And Marine Area Management Project Directorate | tamil nadu | 1 | |
| Integrated Test Range | odisha | 4 | |
| Intelligence Bureau | delhi | 6 | |
| Intelligent Communication Systems India Limited | delhi | 7 | |
| Inter University Accelerator Centre | delhi | 5 | |
| Inter-State Council Secretariat | delhi | 2 | |
| Inter-University Center For Biomedical Research & Superspeciality Hospital | kerala | 3 | |
| Inter-University Centre for Astronomy and Astrophysics | central government | 5 | |
| Inter-University Centre for Astronomy and Astrophysics | maharashtra | 1 | |
| International Advanced Research Centre for Powder Metallurgy and New Materials | telangana | 4 | |
| International Centre For Drinking Water Quality | delhi | 1 | |
| International Centre for Environment Audit and Sustainable Development | rajasthan | 1 | |
| International Centre For Genetic Engineering And Biotechnology | delhi | 2 | |
| International Institute for Population Sciences | maharashtra | 22 | |
| International Institute for Population Sciences | central government | 1 | |
| International Institute of Information Technology | telangana | 13 | |
| International Institute of Information Technology | odisha | 4 | |
| International Relations Division, National Council Of Educational Research And Traning | delhi | 2 | |