| Railway Board | - | http://www.indianrailways.gov.in/railwayboard/ |
| | | |
| Zonal Railways | | |
| Central Railway | - | cr.indianrailways.gov.in |
| Eastern Railway | - | er.indianrailways.gov.in.gov.in |
| Northern Railway | - | nr.indianrailways.gov.in |
| North Eastern Railway | - | ner.indianrailways.gov.in |
| North Frontier. Railway | - | nfr.indianrailways.gov.in |
| Southern Railway | - | sr.indianrailways.gov.in |
| South Central Railway | - | scr.indianrailways.gov.in |
| South Eastern Railway | - | ser.indianrailways.gov.in |
| Western Railway | - | wr.indianrailways.gov.in |
| Kolkata Metro | - | www.kolmetro.com |
| East Central Railway | - | ecr.indianrailways.gov.in |
| North Western Railway | - | nwr.indianrailways.gov.in |
| East Coast Railway | - | |
| South Western Railway | - | swr.indianrailways.gov.in |
| North Central Railway | - | nwr.indianrailways.gov.in |
| West Central Railway | - | wcr.indianrailways.gov.in |
| South East Central Railway | - | secr.indianrailways.gov.in |
| | | |
| Production Units | | |
| Integral Coach Factory, Chennai | - | icf.indianrailways.gov.in |
| Rail Coach Factory, Kapurthalla | - | rcf.indianrailways.gov.in |
| Diesel Locomotive Works | - | dlw.indianrailways.gov.in |
| Chittaranjan locomotive Works | - | clw.indianrailways.gov.in |
| Rail Wheel Plant, Banglore | - | rwf.indianrailways.gov.in |
| Diesel Modernisation Works, Patiala | - | dmw.indianrailways.gov.in |
| Rail Wheel Plant, Bela | - | rwp.indianrailways.gov.in |
| Central Organisations | | |
| CORE, Allahbad | - | core.indianrailways.gov.in |
| RDSO, Lucknow | - | rdso.indianrailways.gov.in |
| Mumbai Railway Vikas Corporation | - | mrvc.indianrailways.gov.in |
