"Open Your Heart" is a song recorded by American singer-songwriter Madonna for her third studio album True Blue (1986). Written by Gardner Cole and Peter Rafelson, it was conceived as a rock and roll song titled "Follow Your Heart" for singer Cyndi Lauper, but Cole and Rafaelson never had the chance to play it for her. At the time, Cole's management was working with Madonna's, who were looking for material for her third studio album. After her manager asked Cole to present a female demo of the song, Madonna accepted it and, alongside producer Patrick Leonard, turned it into a dance song. Lyrically, it's an innuendo-laden love song where the singer expresses her sexual desire. In the United States, the song was released as the fourth single from True Blue on November 12, 1986; overseas, it was released on December 1. Furthermore, it was included in the compilation albums, The Immaculate Collection (1990), Celebration (2009), and the "video version" was featured on the 2023 remix-themed compilation, Finally Enough Love: 50 Number Ones.

True Blue is the third studio album by American singer-songwriter Madonna, released on June 30, 1986, by Sire Records. In early 1985, Madonna became romantically involved with actor Sean Penn, and married him six months later on her 27th birthday. Additionally, she met producer Patrick Leonard while on the Virgin Tour, and formed a professional relationship with him. The first songs they created together were "Love Makes the World Go Round", and the ballad "Live to Tell", which was featured on At Close Range, a film which Penn starred. On late 1985, Madonna and Leonard began working on her third studio album; she also enlisted the help of former boyfriend Stephen Bray, with whom she had worked on her previous record Like a Virgin (1984). Titled True Blue, the record saw Madonna co-writing and co-producing for the first time in her career. Inspired by Madonna's love for Penn, to whom she dedicated it, True Blue is a dance-pop album that features influences of Motown sound, girl groups, and Latin pop.