"Waterloo", first called "Honey-Pie", was the first single from Swedish pop group ABBA's 2nd album Waterloo, their 1st for Epic & Atlantic. This was the song that won ABBA the 1974 Eurovision Song Contest and began their path to worldwide fame. The single was coupled with "Watch Out" as the B-side.

"Waterloo" is widely known as an English recording by supergroup ABBA but when the group won the pre-selections for the Eurovision Song Contest they sang it in Swedish. The day they won the ESC, the studio recording of this song was released as a single in Sweden. For more information, see "Waterloo".