Government House was the official residence of the lieutenant governor of Upper Canada and Ontario, Canada. Four buildings were used for this purpose, none of which exist today, making Ontario one of four provinces not to have an official vice-regal residence.

Toronto is the most populous city in Canada and the capital city of the Canadian province of Ontario. With a population of 2,794,356 in 2021, it is the fourth-most populous city in North America. The city is the anchor of the Golden Horseshoe, an urban agglomeration of 9,765,188 people surrounding the western end of Lake Ontario, while the Greater Toronto Area proper had a 2021 population of 6,712,341. Toronto is an international centre of business, finance, arts, sports and culture and is one of the most multicultural and cosmopolitan cities in the world.