The 1991 Colorado Buffaloes football team represented the University of Colorado at Boulder as a member of the Big Eight Conference during the 1991 NCAA Division I FBS football season. Led by tenth-year year head coach Bill McCartney, the Buffaloes compiled an overall record of 8âÂÂ3âÂÂ1 in a mark of 6âÂÂ0âÂÂ1 in conference play, sharing the Big 8 title with Nebraska. Colorado was invited to the Blockbuster Bowl, where the Buffaloes lost to Alabama. The team was ranked No. 20 in the final AP poll and the final Coaches Poll. Colorado played home games at Folsom Field in Boulder, Colorado.
Colorado clinched share of Big Eight conference title for third straight season.
The following Buffaloes were selected in the 1992 NFL draft after the season.