List of premiers of Ontario by time in office

This is a list of premiers of Ontario in order of time served in office as premier of Ontario as of June 13, 2024. The preceding premier always stays in office during an election campaign, and that time is included in the total. See also List of Ontario political parties by time in office.

List

^* Frank Miller's Progressive Conservative Party won a plurality of seats in the 1985 Ontario general election, but the resulting 33rd Parliament of Ontario passed a motion of no confidence against him less than two months into his mandate, replacing his government with David Peterson's Liberal Party. This table counts the 1985 election as a mandate for Miller.

References

1. List of premiers of Ontario
2. Premier of Ontario
3. List of joint premiers of the Province of Canada
4. Ontario
5. Outline of Ontario
6. List of current Canadian first ministers
7. List of Ontario by-elections
8. List of female first ministers in Canada
9. Timeline of Ontario history
10. Legislative Assembly of Ontario
11. Provinces and territories of Canada
12. Ontario Liberal Party
13. Franco-Ontarians
14. Politics of Ontario
15. University of Western Ontario
16. Order of Ontario
17. Toronto
18. Whitchurch-Stouffville
19. Ottawa
20. List of the first openly LGBT holders of political offices in Canada