| Team: | Ottawa Rough Riders |
| Year: | 1939 |
| Record: | 5–1 |
| Division Place: | 1st, IRFU |
| Coach: | Ross Trimble |
| Playoffs: | Lost Grey Cup |
| Shortnavlink: | Other seasons |
The 1939 Ottawa Rough Riders finished in first place in the Interprovincial Rugby Football Union with a 5–1 record, but lost the 27th Grey Cup to the Winnipeg Blue Bombers.
| Ottawa Rough Riders | 6 | 5 | 1 | 0 | 145 | 44 | 10 | |
| Toronto Argonauts | 6 | 4 | 1 | 1 | 58 | 43 | 9 | |
| 6 | 2 | 4 | 0 | 29 | 84 | 4 | ||
| 6 | 0 | 5 | 1 | 23 | 84 | 1 |
| Week | Date | Opponent | Score | Result | Record | |
| 1 | Oct 7 | vs. Hamilton Tigers | 32–4 | Win | 1–0 | |
| 2 | Oct 14 | at Montreal Royals | 35–13 | Win | 2–0 | |
| 3 | Oct 21 | at Toronto Argonauts | 18–7 | Win | 3–0 | |
| 4 | Oct 28 | vs. Toronto Argonauts | 13–8 | Loss | 3–1 | |
| 5 | Nov 4 | vs. Montreal Royals | 27–0 | Win | 4–1 | |
| 6 | Nov 11 | at Hamilton Tigers | 25–7 | Win | 5–1 |
| Round | Date | Opponent | Score | Result | Record | |
| IRFU Final #1 | Nov 18 | vs. Toronto Argonauts | 11–0 | Win | 6–1 | |
| IRFU Final #2 | Nov 25 | at Toronto Argonauts | 28–6 | Win | 7–1 | |
| Eastern Final | Dec 2 | vs. Sarnia Imperials | 23–1 | Win | 8–1 | |
| Grey Cup | Dec 9 | Winnipeg Blue Bombers | 8–7 | Loss | 8–2 |