| Organization | Department & Ministry | Institution Type | State |
|---|---|---|---|
| Institute of Life Sciences (ILS), Bhubaneswar | Ministry of Science & Technology (MoST) | Research Institutions | Odisha |
| Institute of Mathematical Sciences (IMSc) | Ministry of Science & Technology (MoST) | Research Institutions | Tamil Nadu |
| Institute of Nano Science and Technology (INST), Mohali | Ministry of Science & Technology (MoST) | Research Institutions | Punjab |
| Institute of Nuclear Medicine & Allied Sciences (INMAS) | Ministry of Defence (MoD) | Research Institutions | Delhi |
| Institute of Physics | Ministry of Science & Technology (MoST) | Research Institutions | Odisha |
| Institute of Technology Management (ITM) | Ministry of Defence (MoD) | Research Institutions | Uttarakhand |
| Instruments Research & Development Establishment (IRDE) | Ministry of Defence (MoD) | Research Institutions | Uttarakhand |
| Integrated Test Range (ITR) | Ministry of Defence (MoD) | Research Institutions | Odisha |
| International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad | Ministry of Science & Technology (MoST) | Research Institutions | Telangana |
| International Centre for Genetic Engineering and Biotechnology (ICGEB) | Ministry of Science & Technology (MoST) | Research Institutions | Delhi |
| IREL (India) Limited | Ministry of Science & Technology (MoST) | Research Institutions | Maharashtra |
|
ISRO Inertial Systems Unit (IISU), Thiruvananthapuram
ISRO Inertial Systems Unit (IISU) |
Ministry of Science & Technology (MoST) | Research Institutions | Kerala |
|
ISRO Propulsion Complex (IPRC), Mahendragiri
ISRO Propulsion Complex (IPRC) |
Ministry of Science & Technology (MoST) | Research Institutions | Tamil Nadu |
| ISRO Telemetry, Tracking and Command Network (ISTRAC), Bengaluru | Ministry of Science & Technology (MoST) | Research Institutions | Karnataka |
| Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru | Ministry of Science & Technology (MoST) | Research Institutions | Karnataka |
| Kendriya Vidyalayas Sangathan (KVS) | — | Research Institutions | Delhi |
| Laboratory for Electro-Optics Systems (LEOS), Bengaluru | Ministry of Science & Technology (MoST) | Research Institutions | Karnataka |
| Liquid Propulsion Systems Centre (LPSC), Thiruvananthapuram | Ministry of Science & Technology (MoST) | Research Institutions | Kerala |
| Master Control Facility (MCF), Karnataka | Ministry of Science & Technology (MoST) | Research Institutions | Karnataka |
| Microwave Tube Research & Development Centre (MTRDC) | Ministry of Defence (MoD) | Research Institutions | Karnataka |
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