Joseph-Louis-Euclide Dugas (August 30, 1861 – December 27, 1943) was a farmer and political figure in Quebec.
He represented Montcalm in the House of Commons of Canada from 1891 to 1900 as a Conservative member.
He was born in Montcalm, Canada East, the son of Firmin Dugas, and was educated at the Collège de Joliette and the Collège d'Ottawa.
Dugas also served as a school commissioner.
In 1883, he married Lizzie Rowan.
Dugas' election in 1891 was overturned after an appeal but he won the by-election which followed in 1892.
He was reelected in 1896 but was defeated by François-Octave Dugas when he ran for reelection in 1900.