1931 Notre Dame Fighting Irish football team

The 1931 Notre Dame Fighting Irish football team represented the University of Notre Dame during the 1931 college football season, led by first-year head coach Hunk Anderson.

Following the death of head coach Knute Rockne in a plane crash on March 31, line coach Anderson was promoted on April 10.

Notre Dame entered the season on a 19-game winning streak and opened with a road win, but then had a scoreless tie with Northwestern in the second game, played at Soldier Field in Chicago. Five straight wins followed and the unbeaten string extended to 26 games, until visiting USC won by two points; the Trojans were the last team to defeat Notre Dame, three years earlier in 1928. The next week, Army shut out the Irish 12–0 at Yankee Stadium to conclude the season.