Sonarpur Junction railway station is a Kolkata Suburban Railway Junction station on the main line with an approximate 17 kilometres (11 mi) distance from the Sealdah railway station. It is under the jurisdiction of the Eastern Railway zone of Indian Railways. Sonarpur Junction railway station is one of the busiest railway stations in the Sealdah railway division. More than 115 pairs of EMU local trains pass through the railway station on a daily basis. It is situated in South 24 Parganas district in the Indian state of West Bengal. Sonarpur Junction railway station serves Rajpur Sonarpur and the surrounding areas.

Sonarpur Junction railway station is located at 22°26′34″N 88°25′51″E / 22.4427478°N 88.4309013°E / 22.4427478; 88.4309013. It has an average elevation of 9 metres (30 ft).

In 1862, the Eastern Bengal Railway constructed a 1,676 mm (5 ft 6 in)-wide broad-gauge railway from Sealdah to Sonarpur Junction.

Electrification from Sealdah to Sonarpur Junction was completed with 25 kV AC overhead system in 1965–66.

The platform is well sheltered. The station possesses many facilities including water and sanitation. It is well connected to the SH-1. There is a proper approach road to this station.