The 2023 Colorado Buffaloes football team represented the University of Colorado Boulder as a member of the Pac-12 Conference during the 2023 NCAA Division I FBS football season. This was the program's 13th and final year in the Pac-12 before they rejoined the Big 12 Conference in 2024. The Buffaloes were led by first-year head coach Deion Sanders. They played their home games on campus at Folsom Field in Boulder, Colorado. The Colorado Buffaloes football team drew an average home attendance of 53,180 in 2023, the 36th highest in college football.
The Colorado Buffaloes and the Pac-12 announced the 2023 football schedule on January 18, 2023.
The Colorado Buffaloes spring game was held on April 22, 2023 at Folsom Field. The 2023 spring game sold out for the first time since 1996 and was the highest attended spring game to date in program history with 47,277 in attendance. The game was televised nationally by ESPN and was the only spring game to air on the main network.