The king of hearts is a playing card in the standard 52-card deck.

King of Hearts may also refer to:

• The king of hearts has five sons, card game that may have been a precursor to Cluedo

• King of Hearts (Alice's Adventures in Wonderland), a character from Lewis Carroll's book Alice's Adventures in Wonderland
• King of Hearts, a biography by G. Wayne Miller

• King of Hearts (1936 film), a film by Oswald Mitchell and Walter Tennyson
• King of Hearts (1947 film)
• King of Hearts (1966 film) or Le Roi de coeur, a French film by Philippe de Broca
• King of Hearts (1968 film), an Iranian movie starring Mohammad-Ali Fardin
• King of Hearts, a title used by Domon Kasshu and Master Asia, part of the Shuffle Alliance, in Mobile Fighter G Gundam
• Jamai Raja (TV series), an Indian television series renamed King of Hearts for English viewers

• King of Hearts (French band), a French rock band
• King of Hearts, an American rock band

• King of Hearts (Engelbert Humperdinck album), 1973
• King of Hearts (Rick Vito album), 1992
• King of Hearts (Roy Orbison album), 1992
• King of Hearts (King Ernest Baker album), 1998
• King of Hearts (Camu Tao album), 2010
• King of Hearts (Lloyd album), 2011
• King of Hearts, the soundtrack for the 1966 film composed by Georges Delerue

• "King of Hearts" (song), 2012 song by Cassie
• "King of Hearts" (Kim Petras song), 2023 song by Kim Petras

• King of Hearts (musical), a 1978 Broadway musical with music by Peter Link
• King of Hearts (1954 play), a play by Jean Kerr and Eleanor Brooke
• King of Hearts (2007 play), a satire by Alistair Beaton

• All pages with titles beginning with King of hearts or All pages with titles beginning with King of Hearts
• All pages with titles containing King of Hearts
• King of Clubs (disambiguation)
• King of Diamonds (disambiguation)
• King of Spades (disambiguation)
• Knave of Hearts (disambiguation)
• Jack of Hearts (disambiguation)
• Queen of Hearts (disambiguation)
• Ace of Hearts (disambiguation)
• Kingdom of Hearts, a video game series