Sean Matthew Clancy (born October 22, 1956) is an American former professional football player who was a linebackerfor two seasons in the National Football League (NFL) with the Miami Dolphins and St. Louis Cardinals from 1978 to 1979. He played college football for the Amherst Mammoths.
Clancy was selected by the Miami Dolphins in the 8th round of the 1978 NFL draft out of Amherst College. Clancy would go on to appear in 26 career games for the Dolphins.