Ubisoft Divertissements Inc. (formerly Ubi Soft Divertissements Inc.), doing business as Ubisoft Montreal (formerly Ubi Soft Montreal), is a Canadian subsidiary of the French video game developer Ubisoft, located in Montreal, Quebec, Canada.

Founded in 1997, initially developing low-profile projects, the studio is now one of the largest in the world, with over 2,700 employees. It is responsible for founding and developing, among others, games in the Prince of Persia, Far Cry and Assassin's Creed series, as well as those in the Tom Clancy franchise and Watch Dogs.