Benjamin Hart (August 10, 1779 – February 27, 1855) was a Canadian businessman, militia officer, and justice of the peace.

Benjamin was educated in New York and Philadelphia and by 1798 had returned to Trois-Rivières to assist with the family's extensive business.

When Aaron died in 1800, Benjamin inherited the family's main store in Trois-Rivières and their Montreal house.

He ran the import firm Benjamin Hart and Company, with his son Theodore joining as a partner by 1844.

He opposed the Rebellion Losses Bill of 1849, and signed the Annexation Manifesto, advocating economic and political union with the United States.