Dennis Joseph "Denny" Carmassi is an American drummer notable for playing with many rock bands. Carmassi was a member of the first four line-ups of the band Montrose. After Montrose, he played with his former Montrose bandmate Sammy Hagar as a solo artist, and with his former Montrose bandmates Ronnie Montrose and Jim Alcivar in the band Gamma. He played with Heart, Coverdale-Page, Whitesnake, and David Coverdale as a solo artist.