Thomas Henry Casanova III (born July 29, 1950) is a former American football player and politician.
He played professionally in the National Football League (NFL) for the Cincinnati Bengals for six seasons and was invited to three Pro Bowls, as well as an All-Pro in 1976.
He played college football at Louisiana State University, where he was a three-time first-team All-American.
He is a Republican former member of the Louisiana State Senate, having served a single term from 1996 to 2000.