| Year: | 2009 |
| Team: | Idaho State Bengals |
| Sport: | football |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 1–10 |
| Conf Record: | 1–7 |
| Head Coach: | John Zamberlin |
| Hc Year: | 3rd |
| Stadium: | Holt Arena |
The 2009 Idaho State Bengals football team represented Idaho State University as a member of the Big Sky Conference during the 2009 NCAA Division I FCS football season. Led by third-year head coach John Zamberlin, the Bengals compiled an overall record of 1–10 with a mark of 1–7 in conference play, placing last in the Big Sky. Idaho State played home games at Holt Arena in Pocatello, Idaho.