"Sunday" is a mid-tempo alternative song taken from The Cranberries debut album, Everybody Else Is Doing It, So Why Can't We?. It was released as a promotion single in the USA in 1993, before Island Records decided to opt for a re-release the band's first two European singles, "Dreams" and "Linger" in 1994. No video was recorded for this single and the song did not chart.
A demo version of "Sunday" was featured on the band's 1990 EP cassette Water Circle. .