Jachthaven Stichting Muiden is a small marina situated on the east bank of the Vecht estuary in Muiden, a short distance from the Markermeer and directly alongside the historic Muiderslot castle. It is described as the oldest yacht harbour in Muiden.

The marina accommodates both permanent berths and visiting boats of varying sizes and drafts, with a maximum depth of 2. 5 metres. Facilities include free WiFi, water, electricity, sanitary amenities, and fuel (petrol and diesel).

The marina operates seasonally from 1 April to 1 November, with harbourmasters on hand daily to welcome arriving vessels.