The 1985 Idaho Vandals football team represented the University of Idaho in the 1985 NCAA Division I-AA football season. The Vandals, led by fourth-year head coach Dennis Erickson, were members of the Big Sky Conference and played their home games at the Kibbie Dome, an indoor facility on campus in Moscow, Idaho. The Vandals won their first outright conference title since 1971 (the 1982 team tied for the title, but lost the head-to-head tiebreaker to Montana). Led by quarterbacks Scott Linehan and Rick Sloan, Idaho finished the regular season at 9–2 and 6–1 in the Big Sky.