The 1973 Notre Dame Fighting Irish football team represented the University of Notre Dame during the 1973 college football season. The Irish, coached by Ara Parseghian, ended the season undefeated with 11 wins and no losses, winning the national championship. The Fighting Irish won the title by defeating the previously unbeaten and No. 1 ranked Alabama Crimson Tide in the Sugar Bowl by a score of a 24-23. The 1973 squad became the ninth Irish team to win the national title and the second under Coach Parseghian. Although Notre Dame finished No. 1 in the AP Poll to claim the AP national title, they were not awarded the Coaches' title, since Alabama was awarded the Coaches' Poll title before the bowl season.