- Sidney Crosby
- Sidney Earle Smith
- Sidney Furie
- Sidney Robert Blair
- Sidney Robinovitch
- Sidney S. Schipper
- Sidney Smith Shatford
- Sidney Van den Bergh
- Siege of Fort Erie, War of 1812
- Siege of Fort William Henry
- Sierra Leone Diamond War
- Signal Hill
- Signs of life for Michael Ignatieff?
- Buckam Singh and Sikh Canadians in the First World War
- Sikh Editor Murdered
