The Linienstraße is a street in Dortmund, Germany, known for prostitution. The street is located north of the city's main railway station Dortmund Hauptbahnhof in the Stadtbezirk Innenstadt-Nord district. There have been brothels on Linienstraße since the beginning of the 20th century. Under the "Sperrbezirk" regulations, prostitution in central Dortmund is only permitted in Linienstraße.