Deen Joseph Castronovo (born August 17, 1964) is an American drummer and singer best known for being a member of hard rock acts Bad English, Hardline and Journey. He plays drums and sings for the bands Journey, Generation Radio, and Revolution Saints. He has also played for Ozzy Osbourne, Steve Vai, Paul Rodgers, and GZR, with Black Sabbath's Geezer Butler.
