The 1921-22 Rideau Group playoff champion was won by Smiths Falls. They lost in the quarterfinals of the 1921-22 Ottawa District Senior Playoffs to the Ottawa City Senior League (Group 2) winner Ottawa Gunners in a 2 game total goals series 17 goals to 3 (2-1, 15-2).
Standings[]
| Regular Season | GP | W | L | T | GF | GA | Pts |
|---|---|---|---|---|---|---|---|
| Smiths Falls | 12 | 10 | 2 | 0 | 48 | 27 | 20 |
| Perth Crescents | 12 | 7 | 5 | 0 | 37 | 27 | 14 |
| Ottawa Munitions | 11 | 3 | 8 | 0 | 26 | 40 | 6 |
| Ottawa Victorias | 11 | 3 | 8 | 0 | 26 | 44 | 6 |
Smiths Falls advanced to the 1921-22 Ottawa District Senior Playoffs.
Lanark County Playoffs[]
- Carleton Place Red Wings beat Smiths Falls 7 goals to 5 over two games (1-1)