"Kayleigh" is a song by the British neo-progressive rock band Marillion. It was released as the first single from the concept album Misplaced Childhood. It remains the group's most successful single in terms of chart position, becoming a number two hit. It was kept from the UK number one spot by charity single " You'll Never Walk Alone" by supergroup The Crowd in the summer of 1985. It also made the top 10 in Ireland, Norway and France. "Kayleigh" is the band's sole appearance on the USA's Billboard Hot 100, hitting number 74 in October 1985.
The song received a great deal of media exposure in the UK. 41 Independent Local Radio stations in Britain had the track A-rated on their playlists and it became the most played single on BBC Radio 1. The band also made appearances on television shows such as Wogan and Top of the Pops. The promotional video for the single was shot in Berlin, where the Misplaced Childhood album was recorded, and featured Tamara Nowy, a German woman who subsequently married lead singer Fish, and Robert Mead, the boy portrayed on the sleeve of the album and the single. The song was performed by Fish at the Nelson Mandela 70th Birthday Tribute at Wembley Stadium, with Midge Ure on guitar and Phil Collins on drums.
As with all Marillion albums and singles of the Fish period, the cover art was created by Mark Wilkinson. The b-side on the international version, " Lady Nina", would go on to be used as a single promoting the 1986 US-only mini album Brief Encounter. "Lady Nina" is the only Marillion song from the Fish era to use a drum machine. The US version of the single uses " Heart of Lothian" instead, another track from Misplaced Childhood that would eventually be released as the third and final single from the album. A CD replica of the single was also part of a collectors box-set released in July 2000 which contained Marillion's first twelve singles and was re-issued as a 3-CD set in 2009 (see The Singles '82–'88).