Mountain Province Diamonds Inc. is a Canadian diamond mining company that operates in the Northwest Territories of Canada. The company's primary asset is its 49% ownership interest in the Gahcho Kué diamond mine, which is one of the largest and highest-grade diamond mines in the world. The mine is a joint venture with De Beers Canada Inc., which owns the remaining 51% interest. Mountain Province Diamonds also owns a 100% interest in the Kennady North diamond project, which is located adjacent to the Gahcho Kué mine. The company was founded in 1986 and is headquartered in Toronto, Canada.