| 1940 Ottawa Rough Riders season | |
|---|---|
| Head coach | Ross Trimble |
| Home field | Lansdowne Park |
| Results | |
| Record | 5–1 |
| Division place | 1st, IRFU |
| Playoff finish | Won Grey Cup |
The 1940 Ottawa Rough Riders finished in first place in the Interprovincial Rugby Football Union with a 5–1 record and won the Grey Cup.