| 1966 CFL season | |
|---|---|
| Duration | June – October, 1966 |
| East champions | Ottawa Rough Riders |
| West champions | Saskatchewan Roughriders |
| 54th Grey Cup | |
| Date | November 26, 1966 |
| Venue | Empire Stadium, Vancouver |
| Champions | Saskatchewan Roughriders |
The 1966 CFL season was the Canadian Football League's ninth season since the 1958 merger of the Interprovincial Rugby Football Union and the Western Interprovincial Football Union to create a national league. It was the 13th season in modern-day Canadian football.