Nieuwe Sluis is a Dutch lighthouse in the Nieuwesluis community, a few kilometres west of Breskens, Zeeland, and the southernmost in the country.

It is part of a series of lights marking the end of the Schelde river and guide traffic between the North Sea and the harbor of Antwerp.

[2] Nieuwe Sluis is the oldest extant cast iron lighthouse in the Netherlands after the one in Renesse was demolished in 1915.

[3] The lens assembly was made by the French company of Barbier, Bénard & Turenne, and includes a copper cupola.

During World War II the lighthouse was deactivated and covered in camouflage paint; it was not reactivated until 1951.