The South Eastern Railway is one of the 19 railway zones in India. It is headquartered at Garden Reach, Kolkata, West Bengal, India. It comprises Adra railway division, Chakradharpur railway division, Kharagpur railway division and Ranchi railway division.

The Eastern Railway is among the 19 zones of the Indian Railways. Its headquarters is at Fairley Place, Kolkata and comprises four divisions: Howrah, Malda, Sealdah, and Asansol. Each division is headed by a Divisional Railway Manager (DRM). The name of the division denotes the name of the city where the divisional headquarters is located. Eastern Railway oversees the largest and second largest rail complexes in the country, Howrah Junction and Sealdah railway station, and also contains the highest number of A1 and A Category Stations like Howrah, Malda Town, Sealdah, Asansol, Kolkata, Durgapur, Barddhaman, Rampurhat Junction, Bhagalpur,Jamalpur, Jasidih, Bandel and Naihati. Eastern Railways operates India's oldest train, Kalka Mail.