Tim Commerford (born February 26, 1968) is an American musician, best known as the bassist and backing vocalist for rock band Rage Against the Machine, and supergroups Audioslave and Prophets of Rage. Since 2013 and 2015, he has also been the lead singer and bassist of the bands Future User and Wakrat. He was ranked eighth on Paste magazine's list of "20 Underrated Bass Guitarists" in 2014.