The Constitution of Canada is the supreme law in Canada. It outlines Canada's system of government and the civil and human rights of those who are citizens of Canada and non-citizens in Canada. Its contents are an amalgamation of various codified acts, treaties between the Crown and Indigenous Peoples, uncodified traditions and conventions. Canada is one of the oldest constitutional monarchies in the world.

The legal system of Canada is pluralist: its foundations lie in the English common law system, the French civil law system, and Indigenous law systems developed by the various Indigenous Nations.