James Robert "Jim" McMahon, Jr. (born August 21, 1959 in Jersey City, New Jersey) is a former American football player, playing collegiately at Brigham Young University, where he was a two-time All-American (1980, 1981) and later in the professional ranks with the Chicago Bears and Philadelphia Eagles.
McMahon played his high school football at Roy High School in Roy, Utah.
McMahon mainly served as BYU's punter during his freshman season (1977), but he did play enough at quarterback to throw his first-ever collegiate touchdown pass against UTEP. He continued as the Cougars' punter as the 1978 season began, but when Marc Wilson was injured in the third game of the season (against Colorado State), McMahon starred as the starting quarterback. He led BYU to victory against CSU, accounting for 112 passing yards, 80 rushing yards, and 2 touchdowns along the way. He was named Chevrolet Player of the Game and WAC Player of the Week for his performance. McMahon and Wilson shared quarterback duties for the rest of the season; McMahon played well enough to earn All-WAC honors and Associated Press Honorable Mention All-America. The best game of his sophomore year was against Wyoming: he passed for 317 yards and rushed for 49 more yards, earning another WAC Player of the Week award.