Kathleen O'Day Wynne (listen) (born May 21, 1953) is a Canadian politician who served as the 25th Premier of Ontario and Leader of the Ontario Liberal Party from 2013 to 2018.
Wynne is the Member of Provincial Parliament for Don Valley West.
Wynne was the first female premier of Ontario and the first openly LGBT premier in Canada.A community activist, Wynne was first elected to public office as a Toronto District School Board Trustee in 2000.
She subsequently was elected to the Provincial Legislature in 2003.
Under Premier Dalton McGuinty, she served in various cabinet posts, including as the Minister of Municipal Affairs and Housing and Aboriginal Affairs until resigning to run as a Liberal Party leadership candidate when McGuinty announced his resignation in 2012.Wynne replaced McGuinty as premier upon her victory of the Liberal leadership race, and subsequently led the party to a majority government victory in the 2014 Ontario provincial election.
In the 2018 provincial election, Wynne led her party to the loss of official party status in the worst defeat of a governing party in Ontario history.
Wynne subsequently resigned as Liberal leader on election night and was succeeded by interim leader John Fraser.
Wynne submitted her formal resignation as Premier to Lieutenant Governor Elizabeth Dowdeswell on June 29, 2018.