John Joseph Rapacz (April 25, 1924 – January 2, 1991) was an American football offensive lineman in the National Football League for the New York Giants. He also played in the All-America Football Conference for the Chicago Rockets/Hornets. Rapacz played college football at the University of Oklahoma, where he was an All-American, and was drafted in the third round of the 1947 NFL Draft by the Boston Yanks.