Rømø (German: Röm, North Frisian: Rem) is a Danish island in the Wadden Sea.

This distinction was previously held by the small uninhabited island of Jordsand, which sank in 1999.

It is home to a number of small communities such as Kongsmark, Østerby, Lakolk, and Sønderstrand.

Møller, grandfather of the founder of the famous Danish Maersk shipping company, can still be seen on one of the front benches.

The car ferry to the neighbouring (German) island of Sylt is operated by FRS Syltferry.