Bostancı railway station is a railway station in Kadıköy, Istanbul and is the easternmost station in the district. Located along Bağdat Avenue in the Bostancı neighborhood of Kadıköy, it was a station on the Haydarpaşa suburban between 1951 and 2013, when the railway between Haydarpaşa and Pendik was closed. On 12 March 2019 the station reopened to Marmaray commuter rail service. Prior to 2012, the station was also serviced by many intercity trains to Ankara and Anatolia as well as frequent regional train service to Adapazarı. Bostancı station is 8.64 km (5.37 mi) away from Haydarpaşa Terminal.

The Haydarpaşa suburban, also known as the Haydarpaşa-Gebze line and numbered as B2, was a commuter rail line operated by the Turkish State Railways, between Haydarpaşa Terminal in Kadıköy to Gebze. Since its opening in 1951, it was the busiest commuter rail line and busiest TCDD service in Turkey, until it was discontinued in 2013.