John Daniel Matuszak (October 25, 1950 – June 17, 1989) was an American football defensive end in the National Football League (NFL) who later became an actor.

Matuszak was the first overall pick in the 1973 NFL Draft and played most of his career with the Oakland Raiders until he retired after winning his second Super Bowl in 1981. Matuszak participated in the 1978 World's Strongest Man competition, where he placed ninth. As an actor, Matuszak played in both films and television, appearing first as O.W. Shaddock in 1979 in North Dallas Forty followed by Tonda in the 1981 film Caveman and the deformed Sloth in the 1985 movie The Goonies. His biography, Cruisin' with the Tooz, written with Steve Delsohn, was published in 1987.