Jachthaven Aduarderzijl is a small marina combined with a mini campsite, situated on the Aduarderdiep in the culturally historic Middag- and Humsterland region of Groningen.

The Aduarderdiep meets the well-known Reitdiep here via the Aduarder locks, giving boaters access to a broad network of connected waterways. The site lies roughly 15 km from the city centre of Groningen.

The location serves as a practical base for exploring the Groningen marshes by canoe or motorboat, as well as for cycling and walking.

The LF14 cycle route passes directly alongside, and the marina is a convenient starting or stopping point on the Pieterpad long-distance walking trail. A foot-and-cycle ferry operates between Aduarderzijl and Schaphalsterzijl across the Reitdiep.