2021 Idaho Vandals football team

The 2021 Idaho Vandals football team represented the University of Idaho in the Big Sky Conference during the 2021 NCAA Division I FCS football season. Led by ninth-year head coach Paul Petrino, the Vandals were 4–7 (3–5 in Big Sky, ninth), and played their home games on campus at the Kibbie Dome in Moscow, Idaho.

After the season, Petrino was fired with a cumulative record of .340; the 66 losses were the most in program history, fifteen more than Skip Stahley (1954–61).

Polls
On July 26, 2021, during the virtual Big Sky Kickoff, the Vandals were predicted to finish eighth in the Big Sky by both the coaches and media.

Preseason All–Big Sky team
The Vandals had two players selected to the preseason all-Big Sky team.

Offense

Logan Kendall – FB

Defense

Tre Walker – MLB