1920-21 Ottawa District Senior Playoffs

League Champions

 * Ottawa City Senior League (Group 1): Ottawa St Brigids
 * Ottawa City Senior League (Group 2): Ottawa Gunners
 * St Lawrence League: Perth
 * Upper Ottawa Valley League: Arnprior
 * Lower Ottawa Valley League: Hull

Quarter finals
2 games total goals


 * Gunners 5 Arnprior 2
 * Gunners 6 Arnprior 2

Ottawa Gunners beat Arnprior 11 goals to 4.


 * St Brigids 4 Perth 2
 * St Brigids 5 Perth 3

Ottawa St Brigids beat Perth 9 goals to 5.

Semi final
2 games total goals


 * Gunners 1 St Brigids 1
 * Gunners 2 St Brigids 1

Ottawa Gunners beat Ottawa St Brigids 3 goals to 2.

Final
2 games total goals


 * MARCH 15 Ottawa 3 Hull 3
 * MARCH 18 Ottawa 6 Hull 1

Ottawa Gunners beat Hull 9 goals to 4.

It was too late for Ottawa Gunners to advance to the 1920-21 Eastern Canada Allan Cup Playoffs.