"One Man in My Heart" is a song by British synth-pop band the Human League, written by Neil Sutton and Philip Oakey. It was released as the second single from the band's seventh album, Octopus (1995), on 6 March 1995. A ballad, the song differs from all previous Human League tracks as the lead vocal is performed by band member Susan Ann Sulley, with spoken-word refrains from Oakey and contrasting backing from the third member, Joanne Catherall. The song received positive reviews from music critics and peaked at number 13 on the UK Singles Chart, eventually spending eight weeks in the charts. In 2001, The Guardian newspaper called it one of the best love songs of the 1990s.