1991 NAIA Division II football season

The 1991 NAIA Division II football season, as part of the 1991 college football season in the United States and the 36th season of college football sponsored by the NAIA, was the 22nd season of play of the NAIA's division II for football.

The season was played from August to November 1991 and culminated in the 1991 NAIA Division II Football National Championship, played in Georgetown, Kentucky on the campus of Georgetown College.

The Georgetown Tigers defeated the in the championship game, 28–20, to win their first NAIA national title.

Rankings
Final NAIA Division II poll rankings:

Postseason

 * ‡ Game played at Puyallup, Washington