"The Whole of the Moon" is a song by Scottish band the Waterboys, released as a single from their album This Is the Sea in October 1985. It is a classic of the band's repertoire and has been consistently played at live shows ever since its release. Written and produced by Mike Scott, the subject of the song has inspired some speculation.
The subject of the lyrics has inspired speculation, some of which has been rebutted by the writer. The song began as a "scribble on the back of an envelope on a wintry New York street", after Scott's girlfriend asked him if it was difficult to write a song. Scott added further lyrics to the song upon returning to his hotel and after his return to London.
Like the Waterboys' first single "A Girl Called Johnny", the song is a tribute to an inspirational figure or figures. In each line, the singer describes his own perspective and immediately contrasts it with that of the song's subject, summarizing the difference with the line "I saw the crescent / You saw the whole of the moon".