1973 NAIA Division II football season

The 1973 NAIA Division II football season was the 18th season of college football sponsored by the NAIA and the fourth season of play of the NAIA's lower division for football.

The season was played from August to November 1973 and culminated in the 1973 NAIA Division II Football National Championship, played on December 8, 1973 in Huntington, West Virginia near the campus of Glenville State College.

The Northwestern Red Raiders defeated the in the championship game, 10–3, to win their first NAIA national title. As of 2015, this is the earliest NAIA championship won by a team that remains at the NAIA level.