Lorelei: The Witch of the Pacific Ocean, known in Japan as simply Lorelei (ローレライ, Rōrerai), is a 2005 Japanese war drama film directed by Shinji Higuchi (in his feature directorial debut). In the film, the Imperial Japanese Navy save Tokyo from a third atomic bomb during World War II. The film was the highest-grossing film in Japan during the week of its release.

The story of "Lorelei", based on a best-selling novel written by Harutoshi Fukui, is a departure from the last 50 years of Japanese cinema by weaving a tale using a "what if" fictional narrative with a tip of the hat to modern manga storylines and styles.