John Robarts, Canadian lawyer and politician, 17th Premier of Ontario (born 1917)

John Parmenter Robarts was a Canadian lawyer and politician who served as the 17th premier of Ontario from 1961 to 1971. He was a member of the Progressive Conservative Party of Ontario.

The premier of Ontario is the head of government of Ontario. Under the Westminster system, the premier governs with the confidence of a majority the elected Legislative Assembly; as such, the premier typically sits as a member of Provincial Parliament (MPP) and leads the largest party or a coalition of parties. As first minister, the premier selects ministers to form the Executive Council, and serves as its chair. Constitutionally, the Crown exercises executive power on the advice of the Executive Council, which is collectively responsible to the legislature.