"Who Are You", composed by Pete Townshend, is the title track on The Who's 1978 release, Who Are You, the last album released before drummer Keith Moon's death in September 1978. It was released as a double-A sided single with the John Entwistle composition "Had Enough", also featured on the album. The song became one of the band's biggest US hits, peaking at number 14 and at number 7 in Canada.