Aplerbeck is a borough (Stadtbezirk) of the city of Dortmund, situated within the Ruhr district of North Rhine-Westphalia, Germany. It has functioned as a suburb of Dortmund since 1929 and is located in the southeastern portion of the city.
The geography of Aplerbeck is characterized by the river Emscher, which serves as a tributary to the Ruhr river and flows through the area.