The 1983 Idaho State Bengals football team represented Idaho State University as member of the Big Sky Conference during the 1983 NCAA Division I-AA football season. The Bengals were led by first-year head coach Jim Koetter and played their home games at the ASISU MiniDome, later renamed Holt Arena, an indoor venue on campus in Pocatello, Idaho. After a disappointing season in 1982, the Bengals finished second in the Big Sky with a 5–2 record, and were 8–3 overall in the regular season. Led by senior quarterback Paul Peterson, Idaho State hosted the first round of the 12-team I-AA playoffs, but lost to conference champion Nevada by seven points.