"Time (Clock of the Heart)" is a song by the British new wave band Culture Club that was released in 1982 in the UK and in 1983 in the United States. The song was released as a stand-alone single in most of the world and as the second single from the band's debut album Kissing to Be Clever in North America. As the follow-up single to their global hit, "Do You Really Want to Hurt Me", "Time (Clock of the Heart)" peaked at #2 on the US Billboard Hot 100, kept from the #1 spot by Irene Cara's "Flashdance... What a Feeling". "Time" was also a major hit in the band's native UK, reaching #3 on the UK Singles Chart and selling over 500,000 copies in that country.
The song appears on the North American version of Culture Club's album Kissing to Be Clever. In Europe and other regions, it does not appear on the album, but instead was released as a stand-alone single in November 1982. For many of these markets, its first inclusion on a Culture Club album was on the band's 1987 greatest hits album, This Time: The First Four Years.
Cash Box said the song has "a gentle funk anchor on an otherwise airy romantic ballad." In a retrospective review of the song, Allmusic journalist Stewart Mason wrote: "Of all of Culture Club's early hits, Time (Clock of the Heart) has probably aged the best. Boy George drops the cryptic self-mythology long enough to deliver a tender, heartfelt lyric on lost love."
In 2022, Rolling Stone ranked it the 10th best song of 1982 on their list "100 Best Songs of 1982".