"Head over Heels" is a 1981 song recorded by Swedish pop group ABBA, released as a single the following year. It was extracted from their final studio album, The Visitors, and released as a Double A-side with the title track of that album.

"Head over Heels", whose working title was "Tango", was written and composed by both Benny Andersson and Björn Ulvaeus. Agnetha Fältskog sang the lead vocals, singing about her "very good friend," played in the music video by Anni-Frid Lyngstad, an overactive high-society woman who rushes through the shops, with her hapless and exhausted husband (played by Ulvaeus) following behind. The song's video was the group's final clip directed by long-time collaborator Lasse Hallström.

Jim Colyer describes the song's premise as about "a motivated lady in an age of women's liberation" who finds herself in situations which "call for assertiveness" such as: "pushing through unknown jungles, pushing through the darkness and pushing through the crowd".

As with the previous single "One of Us", Epic Records in the UK used a different picture sleeve from the standard one used in most countries.

The single was not released in the United States, who flipped the B-side to release "The Visitors" as a single instead, with "Head over Heels" as the B-side.

The sheet music has been released, and the song has been choreographed for dance numbers.

"Head over Heels" was not a successful chart hit by ABBA's standards. The release came as the group's popularity was declining, and became ABBA's worst selling single since "I Do, I Do, I Do, I Do, I Do", seven years earlier. It only managed to chart as high as #25 in the UK, breaking a run of 18 consecutive Top 10 hits (from "SOS" in October 1975 to "One of Us" in December 1981). This 18-hit run had equaled that of The Beatles, who had consecutive Top 10 hits from 1964 (with "A Hard Day's Night") to 1976 (with "Yesterday"), broken by "Back in the U.S.S.R.". Although "Head over Heels" did experience Top 10 success in Belgium, the Netherlands, Austria and France, by this time, ABBA's chart domination was all but over, and the group effectively disbanded a year later. The track was excluded from their retrospective double LP The Singles: The First Ten Years, which was released later in 1982.

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