Open Water 2: Adrift (also known simply as Adrift or Open Water 2) is a 2006 German English-language psychological horror thriller film directed by Hans Horn, starring Susan May Pratt, Eric Dane, Richard Speight, Jr., Niklaus Lange, Ali Hillis, and Cameron Richardson. The film was inspired by the short story Adrift by Japanese author Koji Suzuki, from which it took its original title, but promotional posters claimed the film is based on actual events.

The film has no connection to Open Water (2003) and the script had been written before it was theatrically released. After Open Water became a success, Adrift was produced and the name was changed to Open Water 2: Adrift in some countries to capitalize on the success of the earlier film.