The Lower Canada Rebellion, commonly referred to as the Patriots' War in French, is the name given to the armed conflict in 1837–38 between rebels and the colonial government of Lower Canada. Together with the simultaneous rebellion in the neighbouring colony of Upper Canada, it formed the Rebellions of 1837–38.

The Province of Lower Canada was a British colony on the lower Saint Lawrence River and the shores of the Gulf of Saint Lawrence (1791–1841). It covered the southern portion of the current Province of Quebec and the Labrador region of the current Province of Newfoundland and Labrador.