The Government of Trois-Rivières was one of three administrative divisions of the French colony of Canada from 1643 to 1764, the other two being the Government of Quebec and Government of Montreal. At the time of the New France, the colony was divided into five individual governments: one in Trois-Rivières, one in Quebec City, one in Montreal, one in Newfoundland and one in Acadia. Each of these regions was known as a government because it was headed by a governor. The Government of Trois-Rivières was the smallest of the three governments of the St. Lawrence Valley in both area and population.