Joseph S. Krupa Sr. (July 6, 1933 – September 13, 2011) was an American professional football player who was a defensive tackle for nine seasons with the Pittsburgh Steelers of the National Football League (NFL).

[1] Krupa was selected to the Pro Bowl after the 1963 season.

He played college football for the Purdue Boilermakers.

Krupa is a member of the Chicagoland Sports Hall of Fame.

This biographical article relating to an American football defensive lineman born in the 1930s is a stub.