Trintelhaven is an access point on the IJsselmeer, situated along the Markerwaarddijk (also known as the Houtribdijk) — the dike that runs between Lelystad and Enkhuizen in the province of Flevoland.

It sits roughly in the middle of this crossing, making it a useful reference point for weather conditions on the IJsselmeer. The site functions as a working harbor with a boat ramp and serves as a launch point for water-sports enthusiasts.

It is particularly popular with kitesurfers, wingfoilers, and windfoilers, who benefit from the open fetch and consistent winds across the large inland lake. As of April 2025, kitesurfing is officially permitted here from April through July.

The water can become choppy in stronger winds, making it best suited to intermediate and experienced riders. A sandy beach provides easy water access, and parking is available on site.