Reitdiephaven is a marina and waterfront district situated along the Reitdiep on the western edge of Groningen. It serves as a natural access point to the city by water, with boats available to rent for sailing along the Reitdiep into the city centre.

The harbour is best known for its row of vividly coloured waterfront houses, which have made it one of the most photographed spots in Groningen.

A small shopping area sits alongside the marina, and the location is easily reached by car, bicycle, or public transport via the Groningen ring road.