The 1985–86 Boise State Broncos men's basketball team represented Boise State University during the 1985–86 NCAA Division I men's basketball season.

The Broncos were led by third-year head coach Bobby Dye and played their home games on campus at the BSU Pavilion in Boise, Idaho.

They finished the regular season at 12–15 overall, with a 6–8 record in the Big Sky Conference, tied for sixth in the standings.

In the conference tournament in Reno, Nevada, the fifth-seeded Broncos were defeated at the buzzer by Weber State in the quarterfinal round.

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