| Year: | 1939 |
| Team: | Hawaii Rainbows |
| Sport: | football |
| Conference: | Independent |
| Record: | 3–6 |
| Head Coach: | Otto Klum |
| Hc Year: | 19th |
| Stadium: | Honolulu Stadium |
| Bowl: | Pineapple Bowl |
| Bowl Result: | L 6–39 vs. Oregon State |
The 1939 Hawaii Rainbows football team represented the University of Hawaiʻi (now known as the University of Hawaiʻi at Mānoa) as an independent during the 1939 college football season. Led by 19th-year head coach Otto Klum, the Rainbows compiled an overall record of 3–6.