Augustin Perrault (May 16, 1779 – August 27, 1859) was a woodworker, merchant and political figure in Lower Canada.
He represented York in the Legislative Assembly of Lower Canada from 1820 to 1824.
He was born in Saint-François, the son of Jean-Jacques Perrault and Louise Saint-Onge, and established himself in business in Montreal.
He was married three times: first to Marie-Louise Dubuc in 1805, then to Marie-Catherine-Hélène Parthenais in 1807 and finally to Agathe Gaudry in 1822.
Perrault died in Montreal at the age of 80 and was buried in the Notre Dame des Neiges Cemetery.