James LoMenzo (born January 13, 1959) is an American musician, currently the bassist for thrash metal band Megadeth. He has previously been a member of White Lion, Black Label Society, Pride & Glory and Slash's Snakepit, and played with David Lee Roth, John Fogerty and Ace Frehley. LoMenzo was the bassist for Megadeth from 2006 to 2010, and rejoined the band as a touring member in August 2021, before becoming a permanent member again in June 2022.
