Lionheart may refer to:
People
- "Richard the Lionheart", a name for Richard I of England
- " Brendon 'Lionheart' Hartley" is a nickname given to motor racing driver Brendon Hartley
- "Corazon de Leon", former ringname of professional wrestler Chris Jericho
- "Dan Wheldon" was a race car driver who had a Lionheart decal with the English flag on the back of every racing helmet he had
- "Lionheart", nickname of Anthony Smith, a mixed martial artist
In music:
- Lionheart (band)
- Lionheart - A hardcore punk band from Bay Area, California
- Lionheart (Kate Bush album)
- Lionheart (Maddy Prior album), an album by Maddy Prior
- Lionheart (Noel Richards album)
- Lionheart (Saxon album)
- "Lionheart", a song by Blind Guardian on their 2006 album A Twist in the Myth
- "Lionheart", a song by Boston hardcore band Have Heart
- Lionheart Music Group, a record label owned by Universal Music, Sweden
- King and Lionheart, a song by Of Monsters and Men on their 2012 album My Head is an Animal
In film, TV and radio:
- Lionheart (1990 film), a 1990 film starring Jean-Claude Van Damme
- Lionheart (1987 film), a 1987 film directed by Franklin J. Schaffner
- "Lionheart", the first episode of Power Rangers: Wild Force
- The Brothers Lionheart, a novel written by Astrid Lindgren
- Lionheart Radio, a community radio station
In video games:
- Lionheart (video game), a 1993 platform-genre video game
- Lionheart: Legacy of the Crusader, a 2003 video game
- Lionheart: Kings' Crusade, a 2010 video game
- A weapon and limit break in the video game Final Fantasy VIII
Other
- LionHeart (registered charity), RICS Benevolent Fund Ltd
- Lionheart (comics), a Marvel Comics character
- Lionheart (furry character), created by Tom Stazer
- Lionheart, a DC Comics character in the "Bloodlines" crossover
- In Italian, Lionheart translates as Corleone
- Lionheart 100% Whey Protein Isolate, a whey protein supplement owned by Neil Headford and Associates P/L Trading as Boomers Prolongevity, Western Australia