| Organization | Department & Ministry | Institution Type | State |
|---|---|---|---|
| Deco Light Ceramics Ltd. | — | — | Gujarat |
| Deem Roll-Tech Ltd. | — | — | Gujarat |
| Deenanath Mangeshkar Hospital and Research Centre | — | — | Maharashtra |
| Deenbandhu Chhotu Ram University of Science and Technology | — | Centres of Higher Learning | Haryana |
| Deendayal Research Institute | — | — | Delhi |
| Deendayal Upadhyaya Gorakhpur University | — | Centres of Higher Learning | Uttar Pradesh |
| Deepak Foundation | — | — | Gujarat |
| Deepak International Ltd. | — | — | Punjab |
| Deepak Nitrite Ltd. | — | — | Gujarat |
| Deepak Novochem Technologies Ltd. | — | — | Maharashtra |
| Deepkiran Foods Pvt. Ltd. | — | — | Gujarat |
| Defence Avionics Research Establishment (DARE) | Ministry of Defence (MoD) | Research Institutions | Karnataka |
| Defence Bio-Engineering & Electro Medical Laboratory (DEBEL) | Ministry of Defence (MoD) | Research Institutions | Karnataka |
| Defence Electronics Application Laboratory (DEAL) | Ministry of Defence (MoD) | Research Institutions | Uttarakhand |
| Defence Electronics Research Laboratory (DLRL) | Ministry of Defence (MoD) | Research Institutions | Telangana |
| Defence Food Research Laboratory (DFRL) | Ministry of Defence (MoD) | Research Institutions | Karnataka |
| Defence Geoinformatics Research Establishment (DGRE) | Ministry of Defence (MoD) | Research Institutions | Chandigarh |
| Defence Institute of Advanced Technology (DIAT) | Ministry of Defence (MoD) | — | Maharashtra |
| Defence Institute of Bio-Energy Research (DIBER) | Ministry of Defence (MoD) | Research Institutions | Uttarakhand |
| Defence Institute of High Altitude Research (DIHAR) | Ministry of Defence (MoD) | Research Institutions | Ladakh |
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