1919-20 Ottawa District Senior Playoffs

League Champions

 * Ottawa City Senior League (Group 1): Ottawa Munitions
 * Ottawa City Senior League (Group 2): Ottawa Wanderers
 * St Lawrence League: Brockville
 * Upper Ottawa Valley League: Pembroke Arenas

Semi Finals
2 games total goals

Ottawa Munitions beat Ottawa Wanderers 6 goals to 1.

Brockville beat Pembroke Arenas 18 goals to 7.

Final
2 games total goals

Ottawa Munitions beat Brockville 25 goals to 11.

Ottawa Munitions advanced to the 1919-20 Eastern Canada Allan Cup Playoffs.

Champions

 * Lower Ottawa Valley League: Aylmer
 * Upper Ottawa Valley League: Pembroke Arenas

Aylmer did not participate in the district senior playoffs.

Final
2 games total goals

Aylmer beat Pembroke Arenas 11 goals to 5.

Aylmer won the Ottawa Citizen Shield.