De Marne (population: 11,166) is a municipality in the northeastern Netherlands, in the province of Groningen. The municipality covers an area of 167.35 km2 (of which 73.20 km2 water).

The municipality of De Marne consists of the following towns, villages and townships: Broek, Eenrum, Hornhuizen, Houwerzijl, Kleine Huisjes, Kloosterburen, Kruisweg, Lauwersoog, Leens, Mensingeweer, Molenrij, Niekerk, Pieterburen, Schouwerzijl, Ulrum, Vierhuizen, Warfhuizen, Wehe-den Hoorn, Westernieland, Zoutkamp, Zuurdijk.