"Co-Co" is a song by English glam rock band The Sweet, released in 1971 as the second single from the band's debut album Funny How Sweet Co-Co Can Be. It was the Sweet's second single to chart in the UK after "Funny, Funny", peaking at No. 2 on the UK Singles Chart. Outside the UK, "Co-Co" reached No. 1 in the Flanders region of Belgium, South Africa, Switzerland and West Germany.
"Co-Co" was written by Nicky Chinn and Mike Chapman in 1971. The song was also given to Jackie Lee who sang it on her album Jackie's Junior Choice that same year.