| 1939 Cal Poly Mustangs football | |
|---|---|
| Conference | Independent |
| 1939 record | 4–4–1 |
| Head coach | Howie O'Daniels (7th season) |
| Home stadium |
Mustang Stadium (Capacity: 8,500) |
The 1939 Cal Poly Mustangs football team represented California Polytechnic School during the 1939 college football season. Cal Poly was a two-year school until 1941, and competed as an independent from 1929 to 1945.
The team was led by seventh-year head coach Howie O'Daniels and played home games at Mustang Stadium in San Luis Obispo, California. They finished the season with a record of four wins, four losses and one tie (4–4–1). Overall, the Mustangs were outscored by their opponents 78–101 for the season.