"(Last Night) I Didn't Get to Sleep at All" is a song written by Tony Macaulay and performed by The 5th Dimension with instrumental backing from L.A. session musicians from the Wrecking Crew. The song appeared on the band's album Individually & Collectively, produced by Bones Howe and arranged by Bill Holman. The song was a top 10 hit for the group in the U.S., and their sixth and final platinum record.