| Year: | 1940 |
| Team: | Appalachian State Mountaineers |
| Sport: | football |
| Conference: | North State Conference |
| Short Conf: | NSC |
| Record: | 6–4 |
| Conf Record: | 2–2 |
| Head Coach: | R. W. "Red" Watkins |
| Hc Year: | 1st |
| Stadium: | College Field |
The 1940 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 during the 1940 college football season. In their first year under head coach R. W. "Red" Watkins, the Mountaineers compiled an overall record of 6–4, with a mark of 2–2 in conference play, and finished 4th in the NSC.
Appalachian was ranked at No. 279 (out of 697 college football teams) in the final rankings under the Litkenhous Difference by Score system for 1940.[1]