The Ontario general election of 1975 was held to elect the 125 members of the Legislative Assembly (Members of Provincial Parliament, or "MPPs") of the Province of Ontario, Canada.

The Ontario Progressive Conservative Party, led by Bill Davis, won a ninth consecutive term in office, and but lost its majority in the legislature for the first time since the 1945 election, losing 27 seats from its result in the previous election.

The social democratic Ontario New Democratic Party, led by Stephen Lewis, doubled its representation in the legislature, and became the official opposition on the strength of a campaign which called for rent control and highlighted horror stories of individuals bad landlords and exorbitant rent increases. The campaign forced the Davis Tories to promise shortly before the election to implement rent controls.

The Ontario Liberal Party, led by Robert Nixon, won 15 additional seats, but lost the role of official opposition to the NDP. One member of its caucus was elected as a Liberal-Labour candidate.

Results

See also

• Politics of Ontario
• List of Ontario political parties
• Premier of Ontario
• Leader of the Opposition (Ontario)