| Year: | 1990 |
| Team: | Marshall Thundering Herd |
| Sport: | football |
| Conference: | Southern Conference |
| Short Conf: | SoCon |
| Record: | 6–5 |
| Conf Record: | 4–3 |
| Head Coach: | Jim Donnan |
| Hc Year: | 1st |
| Off Coach: | Joe Dickinson |
| Oc Year: | 1st |
| Def Coach: | Mickey Matthews |
| Dc Year: | 1st |
| Captain: | Don Mahoney, Eric Ihnat, Eric Gates, Derek Grier |
| Stadium: | Fairfield Stadium |
The 1990 Marshall Thundering Herd football team was an American football team that represented Marshall University as a member of the Southern Conference (SoCon) during the 1990 NCAA Division I-AA football season. Led by first-year head coach Jim Donnan, the Thundering Herd compiled an overall record of 6–5 with a mark of 4–3 in conference play, tying for fourth place in the SoCon. The team played home games at Fairfield Stadium in Huntington, West Virginia.