| Indian Oil Corporation Limited | delhi | 3229 | |
| Indian Oil Corporation Limited | west bengal | 680 | |
| Indian Oil Corporation Limited | uttar pradesh | 45 | |
| Indian Oil Corporation Limited | tamil nadu | 373 | |
| Indian Oil Corporation Limited | west bengal | 14 | |
| Indian Oil Corporation Limited | odisha | 319 | |
| Indian Oil Corporation Limited | haryana | 201 | |
| Indian Oil Corporation Limited | assam | 1142 | |
| Indian Oil Corporation Limited | assam | 85 | |
| Indian Oilseed and Produce Export Promotion Council | central government | 12 | |
| Indian Ordnance Factories | telangana | 371 | |
| Indian Overseas Bank | central government | 24 | |
| Indian Pharmacopoeia Commission | central government | 100 | |
| Indian Pharmacopoeia Commission | uttar pradesh | 96 | |
| Indian Port Rail Corporation Limited | maharashtra | 35 | |
| Indian Ports Association | delhi | 5 | |
| Indian Post | assam | 514 | |
| Indian Railway Finance Corporation Limited | delhi | 17 | |
| Indian Railway Stations Development Corporation Limited | delhi | 28 | |
| Indian Railways | uttar pradesh | 5 | |
| Indian Railways eProcurement Systems | delhi | 3 | |
| Indian Railways Online | delhi | 39 | |
| Indian Rare Earths Limited | maharashtra | 67 | |
| Indian Renewable Energy Development Agency Limited | delhi | 5 | |
| Indian Space Research Organisation | telangana | 149 | |