Section 55 of the Constitution Act, 1867

Section 55 of the Constitution Act, 1867 (French: article 55 de la Loi constitutionnelle de 1867) is a provision of the Constitution of Canada relating to the power of the Governor General of Canada to give royal assent to a bill passed by the federal houses of Parliament. It also contains the former power of the Governor General to reserve a bill for the consideration of the British government. The provision no longer has any effect, as a result of the growth of Canadian autonomy and constitutional conventions in the 20th century.

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.