Dortmund-Dorstfeld is an S-Bahn station in Dortmund in the German state of North Rhine-Westphalia. It the second most important S-Bahn node in the city after Dortmund Hauptbahnhof. It has four above-ground tracks, which are accessible via two island platforms and two underground tracks that are accessible via side platforms. The station is classified as a category 3 station. It is served by Rhine-Ruhr S-Bahn lines S1, S2 and S4.