"Smooth Operator" is a song by English band Sade from their debut studio album, Diamond Life (1984). It was released as the album's third single in the United Kingdom as a 7-inch single with "Spirit" as its B-side, and as a 12-inch maxi single with "Smooth Operator" and "Red Eye" on side A and "Spirit" on side B. Released on 28 August 1984, it reached number 19 on the UK Singles Chart.
In the United States, "Smooth Operator" was released in February 1985, serving as the album's second US single. The song became Sade's first top-10 entry in the US, peaking at number five on the Billboard Hot 100 for two weeks in May 1985. It spent 13 weeks in the top 40, and also topped the Billboard Adult Contemporary chart for two weeks.
Although "Your Love Is King" remains Sade's highest-peaking single in the UK to date, "Smooth Operator" is the band's breakthrough single on the US charts, and their most successful single internationally.