List of railway lines in India
This article lists conventional railway lines of India. For urban railway lines, see Urban rail transit in India, for high-speed railway lines and speed classification, see List of high-speed railway lines in India.
Legend
;Lines† Converted from narrow or meter gauges
‡ Under construction or under upgradation
;Speed
;Note
Northern region
Eastern region
Northeastern region
| Line | Operator | Opened | Length | Electrified | Ref. | |
| Guwahati–Lumding † | Northeast Frontier Railway | 1900 | ||||
| Lumding–Dibrugarh † | Northeast Frontier Railway | 1903 | ||||
| Lumding–Sabroom † | Northeast Frontier Railway | 2008 | ||||
| New Bongaigaon–Guwahati | Northeast Frontier Railway | 1962 | ||||
| Rangiya–Murkongselek † | Northeast Frontier Railway | 1895 | ||||
| Sivok–Rangpo ‡ | Northeast Frontier Railway | TBD | TBD |
Central region
Western region
Southern region
Meter and narrow gauge lines
Main lines
The following major trunk lines that connect major Indian cities are formed by combination of multiple smaller lines.| Line | Operator | Opened | Length | Electrified | Ref. | |
| Howrah–Chennai | South Eastern, East Coast, South Central and Southern Railway | 1901 | ||||
| Howrah–Mumbai | South Eastern, South East Central and Central Railway | 1890 | ||||
| Howrah–New Delhi | Eastern, East Central, North Central and Northern Railway | 1866 | ||||
| Mumbai–Chennai | Central, South Central and Southern Railway | 1871 | ||||
| New Delhi–Chennai | Northern, North Central, Central, South Central and Southern Railway | 1929 | ||||
| New Delhi–Mumbai | Northern, North Central, West Central and Western Railway |