Louis-Auguste Dupuis (August 24, 1884 – March 11, 1967) was an educator, notary and political figure in Quebec.
He was born in Saint-Roch-des-Aulnets, the son of Jules-Arthur Dupuis and Eugénie Miville Dechêne.
He articled as a notary, qualified to practise in 1907 and set up practice in Sainte-Anne-de-la-Pocatière.
He was elected to the Quebec assembly in a 1909 by-election held after Louis-Rodolphe Roy was named a judge.
His uncle: Alphonse-Arthur Miville Dechêne served in the Canadian House of Commons and his uncles Pamphile-Gaspard Verreault and François-Gilbert Miville Dechêne were members of the Quebec assembly.