| Year: | 2005 |
| Team: | Montana State Bobcats |
| Sport: | football |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Tsnrank: | 18 |
| Record: | 7–4 |
| Conf Record: | 5–2 |
| Head Coach: | Mike Kramer |
| Hc Year: | 6th |
| Stadium: | Bobcat Stadium |
| Champion: | Big Sky co-champion |
The 2005 Montana State Bobcats football team was an American football team that represented Montana State University in the Big Sky Conference during the 2005 NCAA Division I-AA football season. In their sixth season under head coach Mike Kramer, the Bobcats compiled a 7–4 record (5–2 against Big Sky opponents), finished in a three-way tie for the Big Sky championship with and Montana, but did not receive a bid to the NCAA Division I-AA Football Championship playoffs. Montana State ranked No. 18 in final I-AA poll by The Sports Network.[1]