The Canadian Citizenship Act was a statute passed by the Parliament of Canada in 1946 which created the legal status of Canadian citizenship. The Act defined who were Canadian citizens, separate and independent from the status of the British subject and repealed earlier Canadian legislation relating to Canadian nationals and citizens as sub-classes of British subject status.

Canadian nationality law details the conditions by which a person is a national of Canada. The primary law governing these regulations is the Citizenship Act, which came into force on February 15, 1977 and is applicable to all provinces and territories of Canada.