Metalocalypse is an American musical adult animated television series created by Brendon Small and Tommy Blacha for Adult Swim. It premiered on August 6, 2006. The television program centers on the larger-than-life melodic death metal band Dethklok, and often portrays dark and macabre content, including such subjects as violence, death, and the drawbacks of fame, with hyperbolic black comedy. The show was widely heralded as both a parody and a pastiche of heavy metal culture.

The music, written by guitarist/creator Brendon Small, was credited to the band and featured in most episodes. The animation was often carefully synced to the music with the chord positions and fingering of the guitar parts shown in some detail. The show was canceled in 2013. In 2021, Adult Swim announced a direct-to-video film had been greenlit; the film Metalocalypse: Army of the Doomstar was released on August 22, 2023, on Blu-ray and digital.