Blackheart is a Marvel Comics character.
Blackheart may also refer to:
Blackheart (album), a 2015 album by Dawn Richard Blackheart (plant disease), a non-parasitic fruit disease that causes rotting from the inside. Blackheart Beagle, a Disney character from the Donald Duck universe Blackheart Records, an American record label founded by rock musicians Joan Jett and Kenny Laguna
See also Blackhearts, Joan Jett's backing band Black Heart