The Inter-Services League was an intermediate league based in Ottawa. It ran in the 1945-46 season and was made up of four military teams, one from the Navy, one from the Air Force, and two from the Army (District Depot and Quartermaster General). The championship was won by the Quartermaster General team.
|Ottawa RCAF Flyers||8||6||2||0||69||40||12|
|Royal Canadian Navy||8||1||7||0||43||85||2|
Best of 3
- Quartermaster General beat Navy (17-3 and cancelled)
- Air Force beat District Depot (17-9 and cancelled)
Both series were ended after one game because of lopsided scores.
Best of 5
- Quartermaster General beat Air Force 3 wins to none (10-3, 7-1, 5-2)
Quartermaster General advanced to the 1945-46 Ottawa District Senior Playoffs.