Joseph-Rodolphe Ouimet (16 November 1878 – 21 August 1948) was a Liberal party member of the House of Commons of Canada. He was born in L'Île-Bizard, Quebec and became a notary. The son of Adolphe Ouimet and Clephire Nantel, he was educated at the Collège Sainte-Marie de Montréal and entered practice as a notary in Saint-Polycarpe. In 1905, Ouimet married Hortense Mousseau, the sister of Joseph-Octave Mousseau.