| Year: | 1978 |
| Team: | Army Cadets |
| Sport: | football |
| Conference: | Independent |
| Record: | 4–6–1 |
| Head Coach: | Homer Smith |
| Hc Year: | 5th |
| Captain: | Clennie Brundidge, Chuck Schott |
| Stadium: | Michie Stadium |
The 1978 Army Cadets football team represented the United States Military Academy in the 1978 NCAA Division I-A football season. In their fifth and final year under head coach Homer Smith, the Cadets compiled a 4–6–1 record and were outscored by their opponents by a combined total of 255 to 188.[1] In the annual Army–Navy Game, the Cadets lost to the Midshipmen by a 28 to 0 score.[2] No Army players were selected as first-team players on the 1978 College Football All-America Team.
The team had 13 starters back from the 1977 season, though were without their quarterback Leamon Hall.