Toussaint Pothier (May 16, 1771 – October 22, 1845) was a businessman, seigneur and political figure in Lower Canada.

He purchased the seigneuries of Lanaudière and Carufel in 1814 and also owned a large amount of land in the centre of Montreal.

He served as a member of the Legislative Council of Lower Canada from 1824 until it was dissolved in 1838.

He also served on the first and third Special Councils which administered the province after the Lower Canada Rebellion.

With Peter McGill, he was involved in the construction of the Champlain and St Lawrence Railroad, the first railway in the province.