"In the Hall of the Mountain King" is an instrumental song from the sixth scene of act 2 of the 1867 play Peer Gynt, composed by Edvard Grieg. It features a boy who fell in love with a girl but is not allowed to marry her, causing him to run away to the mountain and be kidnapped by the Troll monarch the Mountain King.
- The song appears in many of Fritz Lang's early movie plot points.
- The melody was used for the songs "Petey's King of France" from Disney's 2004 direct-to-DVD animated film Mickey, Donald, Goofy: The Three Musketeers, and "Hair Up" from Dreamworks' 2016 animated film Trolls.
- It appears in Steve Cutt's animated short film, Man. As the theme for it's titlar main antagonist.
- The melody appears briefly in the main titles theme from the 1988 film Beetlejuice.
- It is also vocalized during the song "The Whole “Being Dead” Thing Pt. 2" from the film's stage musical adaptation.
- The melody has been constantly used by the English theme park Alton Towers, becoming something like the park's unofficial theme or anthem.