The 1934 Ontario general election was the 19th general election held in the Province of Ontario, Canada. It was held on June 19, 1934, to elect the 19th Legislative Assembly of Ontario ("MLAs"). The Ontario Liberal Party, led by Mitchell Hepburn, defeated the governing Ontario Conservative Party, led by George Stewart Henry. Hepburn was assisted by Harry Nixon's Progressive bloc of MLAs who ran in this election as Liberal-Progressives on the understanding that they would support a Hepburn led government. Nixon, himself, became a senior cabinet minister in the Hepburn government.