| Year: | 1990 |
| Team: | Appalachian State Mountaineers |
| Sport: | football |
| Conference: | Southern Conference |
| Short Conf: | SoCon |
| Record: | 6–5 |
| Conf Record: | 5–2 |
| Head Coach: | Jerry Moore |
| Hc Year: | 2nd |
| Stadium: | Kidd Brewer Stadium |
The 1990 Appalachian State Mountaineers football team was an American football team that represented Appalachian State University as a member of the Southern Conference (SoCon) during the 1990 NCAA Division I-AA football season. In their second year under head coach Jerry Moore, the Mountaineers compiled an overall record of 6–5 with a conference mark of 5–2.