William Badgley (27 March 1801 – 24 December 1888) was a Canadian born in Lower Canada, educated there, and admitted to the Lower Canadian bar in 1823.

He was also the founder of a law firm now known as the Montreal office of Borden Ladner Gervais LLP.

He was the son of Francis Badgley (1767–1841), a merchant with family business connections to the London fur trade.

He was a brother to Francis and Elizabeth, wife of William Molson.

This Canadian biographical article relating to law is a stub.