Dortmund-Kley station is in the district of Kley of the city of Dortmund in the German state of North Rhine-Westphalia. It was built on a loop line off the Witten/Dortmund–Oberhausen/Duisburg railway, which was opened on 24 September 1983 from Bochum-Langendreer to Dortmund-Dorstfeld. The station was opened on 24 September 1983 and it is classified by Deutsche Bahn as a category 5 station.