January 1 - Canadian Citizenship Act 1946 comes into effect. Among other things this changed federal law such that Canadian women no longer lost their citizenship automatically if they married non-Canadians.[3]
June 15 - The laws limiting Asian immigration to Canada are repealed; Canadians of Asian descent are allowed to vote in federal elections.
July 22 - Two new nuclear reactors go online at the Chalk River research facility.
September 1 - Two Canadian National Railways (CNR) passenger trains collide head-on at Dugald, Manitoba, resulting in 31 people dead and 85 people injured. The disaster is exacerbated by the CNR's use of wooden passenger coaches, as strict rationing of steel during the Second World War impeded the shift to steel coaches.[4]
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