Marina Muiderzand is a large marina situated on the IJmeer in Almere Duin, on the outskirts of Almere Poort in the Netherlands.

With roughly 850–950 berths, it serves as a well-established access point for recreational boaters seeking entry to some of the country's most navigable waters.

From here, sailors and motorboat enthusiasts can reach the Markermeer, IJsselmeer, and Randmeren directly, with further routes extending to the Frisian lakes, the Waddensea, and the North Sea.

The town of Muiden lies approximately three nautical miles away across the IJmeer, and Amsterdam is reachable within about half an hour by car or train.

The marina sits amid a natural landscape of small islands and dunes, and is part of the broader Almere Duin district. It operates on VHF channel 31 and is a popular base for water sports of all kinds, including catamaran sailing and kite-surfing.