George Allsopp (c. 1733 – 14 April 1805) was a British-born Canadian businessman and government office holder. He became a merchant in Quebec in the 1760s and a seigneur in 1773. He went heavily into debt to open a gristmill, which in 1788 was the province's largest producer of flour. He also lobbied the Quebec and British government for reforms to the Quebec judicial system and the creation of a legislative assembly. He was also appointed to various government positions, including the province's executive council and as a justice of the peace.