| Sport: | football |
| Year: | 2005 |
| Team: | Marshall Thundering Herd |
| Conference: | Conference USA |
| Division: | East |
| Short Conf: | C-USA |
| Record: | 4 - 7 |
| Conf Record: | 3 - 5 |
| Hc Year: | 1st |
The 2005 Marshall Thundering Herd football team represented Marshall University in the 2005 NCAA Division I-A football season. Marshall was led by first-year head coach Mark Snyder and played their home games at Joan C. Edwards Stadium. This marked the Herd's inaugural season as a member of Conference USA and the C-USA East Division after spending the previous 8 seasons as a member of the Mid-American Conference.