The 1931 Ottawa Rough Riders finished in fourth place in the Interprovincial Rugby Football Union with a 0–6 record and failed to qualify for the playoffs.
Regular season
Standings
[1]
Schedule
| Week | Date | Opponent | Score | Result | Record |
| 1 | Oct 10 | at Montreal AAA Winged Wheelers | 32–6 | Loss | 0–1 |
| 2 | Oct 17 | vs. Hamilton Tigers | 9–5 | Loss | 0–2 |
| 3 | Oct 24 | vs. Toronto Argonauts | 8–5 | Loss | 0–3 |
| 4 | Oct 31 | at Toronto Argonauts | 24–7 | Loss | 0–4 |
| 5 | Nov 7 | at Hamilton Tigers | 14–7 | Loss | 0–5 |
| 6 | Nov 14 | vs. Montreal AAA Winged Wheelers | 12–1 | Loss | 0–6 |
[2]
References
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| Franchise | |
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| Stadiums | |
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| Lore | |
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| Important figures | |
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| Retired numbers | |
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Dominion Championships (3) | |
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Grey Cup Championships (9) | |
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Eastern Division Championships (15) | |
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| See also | |
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