"I Want to Tell You" is a Beatles song on the 1966 album Revolver (see 1966 in music). It was written by George Harrison and recorded on June 2, 1966 (with the bass overdubbed on June 3).

It features a flat Harrison vocal, supported heavily by Lennon and McCartney on backup vocals, in a fashion similar to Harrison's earlier "If I Needed Someone". It is largely driven by the bass and the persistent, almost hypnotic, piano pounding throughout the song.