Rudy Sarzo (born Rodolfo Maximiliano Sarzo Lavieille Grande Ruiz Payret y Chaumont, November 18, 1950) is a Cuban-American hard rock/heavy metal bassist. Sarzo remains best known for his work with Quiet Riot, Ozzy Osbourne, and Whitesnake, and has also played with several well known heavy metal and hard rock acts including Manic Eden, Dio, Blue Öyster Cult, Geoff Tate's Queensrÿche and Devil City Angels. He is currently the bass player for The Guess Who.