"If I Can't Have You" is a disco song written by the Bee Gees in 1977. The song initially appeared on the Saturday Night Fever soundtrack in a version by Yvonne Elliman, released in November 1977. The Bee Gees' own version appeared a month later as the B-side of "Stayin' Alive".

Saturday Night Fever is the soundtrack album from the 1977 film Saturday Night Fever starring John Travolta. The soundtrack was released on November 15, 1977 by RSO Records. Prior to the release of Thriller by Michael Jackson, Saturday Night Fever was the best-selling album in music history, and still ranks among the best-selling soundtrack albums worldwide, with sales figures of over 40 million copies.