Section 146 of the Constitution Act, 1867

Section 146 of the Constitution Act, 1867 (French: article 146 de la Loi constitutionnelle de 1867) is a provision of the Constitution of Canada authorising the expansion of Canada by admitting British Columbia, Newfoundland, Prince Edward Island, Rupert's Land, and the North-Western Territory into Canada.

The Constitution Act, 1867 is the constitutional statute which established Canada. Originally named the British North America Act, 1867, the Act continues to be the foundational statute for the Constitution of Canada, although it has been amended many times since 1867. It is now recognised as part of the supreme law of Canada.