Borough 9 (German: Stadtbezirk 9) is a southern borough of Düsseldorf, the state capital of North Rhine-Westphalia, Germany.

To the east and west the borough borders the rural districts of Mettmann and Rhein-Kreis Neuss respectively.

Borough 9 is made up of eight Stadtteile (city parts): The borough is served by numerous railway stations and highway.

[3] Stations include Düsseldorf-Benrath, Düsseldorf-Reisholz and both Düsseldorf Stadtbahn light rail- and Rheinbahn tram-stations.

The borough can also be reached via Bundesautobahn 46 and 59 as well as Bundesstraße 8 and 228.