Tramhaven is a yacht harbour located in Hellevoetsluis, Zuid-Holland, on the Haringvliet.

Its name derives from a historic tram line that once ran here, part of a steam-tram connection serving Goeree Overflakkee that carried goods and passengers between the harbour, the town, and the surrounding island.

The harbour played a notable role in Hellevoetsluis's development as a naval base and trading centre, particularly during the seventeenth century when the Admiralty was stationed here. Today Tramhaven functions as a working marina.

It is also used as a dive access point, with the entry located at the outer side of the harbour at the end of the breakwater. Reaching it requires a lengthy walk across a grass field.

The breakwater surface can be uneven, with stones sometimes missing or loose, so careful footing is advised. Because of the site's proximity to the marina, recreational boat traffic is a factor to be aware of.

Only freshwater species are encountered at this dive site.