The Island of Montreal is a large island in southwestern Quebec, Canada, that is the site of a number of municipalities, including most of the city of Montreal, and is the most populous island in Canada. It is the main island of the Hochelaga Archipelago at the confluence of the Saint Lawrence and Ottawa rivers.

The Hochelaga Archipelago, also known as the Montreal Islands, is a group of islands at the confluence of the Saint Lawrence and Ottawa rivers in the southwestern part of the province of Quebec, Canada.