The 2005 Arizona Wildcats football team represented the University of Arizona during the 2005 NCAA Division I-A football season. They were coached by Mike Stoops in his second season with the Wildcats. They ended the year with a 3–8 record (2–6 against Pac-10 opponents), which was identical to the previous season in terms of the record. Despite a below-average record, the season featured a blowout upset victory over UCLA in November that was a high point for the Wildcats during the year.