"If I Can't Have You" Is A Disco Song Written By Barry Robin And Maurice Gibb In 1977. The Song Initially Appeared On The Saturday Night Fever Soundtrack In A Version By Yvonne Elliman. It Was Released In December Of 1977 As The Fourth Single From That Album. "If I Can't Have You" Reached The Top Of The U.S. Billboard Hot 100 On May 13th Of 1978. It Was A Top Ten Hit In The UK #4 Australia #9 And France #5 . The Bee Gees Recorded Their Own Version Of The Song And Added It As A B-Side To Their #1 Song "Stayin' Alive." Another Cover Version Of The Song By Kim Wilde Was Released In 1993. It Reached #12 In The UK And #3 In Australia.