Osisko Mining Inc., a mineral exploration company, engages in the acquisition, exploration, and development of precious mineral deposits in Canada. The company primarily explores for gold deposits. It holds interest in the Windfall Lake Project, Quévillon Osborne Project, and Urban-Barry Project located in Québec, Canada; and Phoenix Properties located in Québec, Canada. The company was formerly known as Oban Mining Corporation and changed its name to Osisko Mining Inc. in June 2016. Osisko Mining Inc. is headquartered in Toronto, Canada. As of October 25, 2024, Osisko Mining Inc. operates as a subsidiary of Gold Fields Windfall Holdings Inc.