The Krammer is a body of water in the Netherlands.
It is part of the Rhine–Meuse–Scheldt delta, and is situated between the islands Goeree-Overflakkee and Sint Philipsland. It is a fresh water and is the western part of the Volkerak. To the west, it continues into the Grevelingen, from which it is separated by the Grevelingendam.
Before 1967, it was a tidal river, but it was closed off as part of the Delta Works.
Coordinates: 51°40′N 4°11′E / 51.66°N 4.18°E