Séverin Lachapelle (September 18, 1850 – June 18, 1913) was a physician, educator and political figure in Quebec. He represented Hochelaga in the House of Commons of Canada from 1892 to 1896 as a Conservative member. Lachapelle was first elected to the House of Commons in an 1892 by-election held after Alphonse Desjardins was named to the Canadian senate. He was defeated by Joseph Alexandre Camille Madore when he ran for reelection in 1896 and 1900. He died in Montreal at the age of 62 and was buried in Notre Dame des Neiges Cemetery.