|Date of birth||December 24, 1945|
|Place of birth||Chicago, Illinois|
1967 / Round: 1 / Pick 11Jersey Number 79
|1968–1977||San Francisco 49ers|
Casimir Joseph Banaszek (born December 24, 1945) is a former professional American football offensive lineman who played ten seasons with the San Francisco 49ers. He played his college football at Northwestern University, and has been named to the Chicagoland Sports Hall of Fame.