| 1925 Ottawa Senators season | |
|---|---|
| Head coach | Dave McCann |
| Home field | Lansdowne Park |
| Results | |
| Record | 4–1–1 |
| League place | 1st, IRFU |
| Playoff finish | Won Grey Cup |
The 1925 Ottawa Senators finished in first place in the Interprovincial Rugby Football Union with a 4–1–1 record and won the first Grey Cup in franchise history by defeating the Winnipeg Tammany Tigers 24–1 at Lansdowne Park.