"All of You" is a 1984 vocal duet between Spanish singer and songwriter Julio Iglesias and American singer Diana Ross, which was released on June 12 as the lead single from both Iglesias's album 1100 Bel Air Place, released on the Columbia Records label, and Ross's fifteenth album, Swept Away (1984), released on the RCA Records label.

It was written by Cynthia Weil, Iglesias and Tony Renis, and produced by Richard Perry.

In the middle 1980s, having already achieved a high level of international prominence, Spanish singer Julio Iglesias was seeking to gain a foothold in American music; to this end, he had learned English.

On his album 1100 Bel Air Place, he had already recorded a cover version of "The Air That I Breathe" in duet partnership with the Beach Boys and an original selection, "To All The Girls I've Loved Before," in duet partnership with Willie Nelson.

That would soon change as Ross reportedly ended up spending the Christmas holiday season at Iglesias's Miami estate.