Sealdah railway division is one of the four railway divisions under the Eastern Railway zone of the Indian Railways. Its headquarters is located in Kaiser Street in Kolkata, West Bengal near the Sealdah railway station. Geographically the division covers the railway tracks and services in the areas between the Hooghly river on the west, Bangladesh on the north and east and the Sundarbans in the south.

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.