Passantenhaven Oldemarkt is a transit marina situated in the center of Oldemarkt, Overijssel. It forms part of Stichting Waterrecreatie Steenwijkerland and serves as a convenient stopping point for visiting boaters.

The surrounding area offers a variety of attractive nature reserves as well as nearby villages worth exploring. The marina lies within easy reach of several other waterway facilities, including Passantenhaven Driewegsluis roughly 2.

7 km away and JH Ossenzijl about 4 km distant. Fees apply for use of the harbor.