Active teams in bold.

• Bishop's College (member 1884–1891)
• Britannia Football Club (member 1883–1903)
• Brockville (member 1899–1902)
• HMCS St. Hyacinthe-Donnacona Navy Combines (member 1943–1944)
• Huntingdon Army (member 1942–1943)
• Kingston Limestones (member 1898)
• Lachine RCAF Station Flyers (member 1942–1943)
• McGill Redmen (member 1883–1944)
• McGill University Seconds (member 1937)
• Montreal Hornets (member 1883–1906)
• Montreal Nationals (member 1937)
• Notre-Dame-de-Gråce Eastward Yellow Jackets (member 1937)
• Ottawa RedBlacks (member 1894–1906)
• Ottawa College Rugby Club (member 1894–1904)
• Quebec City Rugby Club (member 1883–1893)
• St. George's College Rugby Club (member 1887)
• St. Patrick's Saints (member 1905–1906)
• Verdun Grads (member 1942–1944)
• Victoria Rifles (member 1890)
• Westmount Football Club (member 1904–1937)