The 1977 Ontario general election was held on June 9, 1977, to elect the 125 members of the 31st Legislative Assembly of Ontario. The Progressive Conservative Party, led by Premier Bill Davis, was re-elected for an eleventh consecutive term in office, again with a minority in the legislature. The PCs won an additional seven seats, but were not able to win a majority. The Liberal Party, led by Dr. Stuart Smith, lost one seat compared to its result in the previous election, but formed the Official Opposition because the NDP lost more seats. The New Democratic Party, led by Stephen Lewis, lost five seats, and losing the status of Official Opposition to the Liberals.