Dark Heart may refer to:

• Dark Heart (TV series), a British television crime drama series
• The name of a villain in Care Bears
• Dark Heart, a novel in the Dragonlance fictional campaign setting; see List of Dragonlance novels
• "Dark Heart", an episode of Justice League Unlimited showcasing The Atom
• Operation Dark Heart, a 2010 memoir by U.S. Army intelligence officer Lt. Col Anthony Shaffer
• "Dark Heart", a 1994 single by Bomb the Bass featuring Spikey T also featured on their 1995 album Clear
• Dark Hearts, an independent film starring Kyle Schmid and Sonja Kinski