List of Famous people born in Ontario, Canada

Derek McGrath is a Canadian actor.

James McMillan was a businessman and a Republican U.S. Senator from Michigan, as well as the chair of the McMillan Commission.

James Lewis Kraft was a Canadian-American entrepreneur and inventor. Kraft was the first to patent processed cheese.

Sean Sullivan was a Canadian actor. He is most noted for his stage and television performances in productions of David French's play Of the Fields, Lately, for which he won an ACTRA Award in 1977 as Best Television Actor for the CBC Television film; and his film performances in Springhill, for which he won a Canadian Film Award as Best Actor in a Non-Feature Film in 1972, and The Boy in Blue, for which he received a posthumous Genie Award nomination for Best Supporting Actor at the 7th Genie Awards in 1986.

John Bracken was a Canadian agronomist and politician who was the 11th and longest-serving premier of Manitoba (1922–1943) and later the leader of the Progressive Conservative Party of Canada (1942–1948).

William Scott Darling was a Canadian-born writer and a pioneer screenwriter and film director in the Hollywood motion picture industry. He is often known in Hollywood histories as Scott Darling, though he was almost invariably credited in films as W. Scott Darling.

Samuel Beatty (1881–1970) was dean of the Faculty of Mathematics at the University of Toronto, taking the position in 1934.

Brian Richard Walter Bradley is a Canadian former professional ice hockey player. Bradley played for a number of different hockey teams in many different leagues. He played for the London Knights in the early 1980s before being selected 51st overall, in the 3rd round, by the Calgary Flames at the 1983 NHL Entry Draft. Bradley spent a season with the Canadian national team before moving to the National Hockey League (NHL) for good.

Walter Scott was the first Premier of the province of Saskatchewan in Canada.

Joseph Martin was a lawyer and politician in Manitoba, British Columbia and the United Kingdom often referred to as "Fighting Joe".