Passantenhaven Delft / De Kolk is a visitor mooring and access point situated on the Rijn-Schiekanaal at the southern edge of Delft.

The Kolk — formally known as Zuidkolk — is a sizable, triangular harbor that forms part of this canal, which has connected the Oude Rijn near Leiden to the Schie since 1893, running through the province of Zuid-Holland.

The waterway serves both commercial and recreational traffic, linking the cities of Leiden, Delft, and Rotterdam.

Recreational boaters use the Kolk as a stopping point along this historic route, which passes through scenery familiar from Johannes Vermeer's celebrated painting of Delft. The harbor lies only a few kilometers from the Maas River via the Schiedam watercourse.