| Year: | 1938 |
| Team: | Appalachian State Mountaineers |
| Sport: | football |
| Conference: | North State Conference |
| Short Conf: | NSC |
| Conference2: | Smoky Mountain Conference |
| Short Conf2: | SMC |
| Record: | 9–1 |
| Conf Record: | 3–1 |
| Conf2 Record: | 3–0 |
| Head Coach: | Kidd Brewer |
| Hc Year: | 4th |
| Stadium: | College Field |
The 1938 Appalachian State Mountaineers football team was an American football team that represented Appalachian State Teachers College (now known as Appalachian State University) as a member of the North State Conference and the Smoky Mountain Conference during the 1938 college football season. In their fourth year under head coach Kidd Brewer, the Mountaineers compiled an overall record of 9–1, with a mark of 3–1 in NSC and 3–0 in SMC conference play.