List of Famous people born in Ontario, Canada

Alexander Morris was a Canadian politician. He served in the cabinet of Prime Minister John A. Macdonald (1869–1872), and was the second Lieutenant Governor of Manitoba (1872–1877). He also served as the founder and first Lieutenant Governor of the District of Keewatin.

Steve Byers is a Canadian actor, best known for his roles on Falcon Beach and Slasher.

Thomas Miller was the shortest serving and seventh Lieutenant Governor of Saskatchewan and was in office in 1945 for less than four months.

Kathleen Barr is a Canadian voice actress, best known for voicing Marie Kanker and Kevin in Ed, Edd n Eddy and Trixie Lulamoon and Queen Chrysalis in My Little Pony: Friendship is Magic. She also voiced Dot Matrix in ReBoot, Kaiko Nekton in The Deep, Wheezie in Dragon Tales, and Gelorum in Hot Wheels: AcceleRacers.

Paul Peel was a Canadian figure painter. Having won a medal at the 1890 Paris Salon, he became one of the first Canadian artists to receive international recognition in his lifetime.

Joseph Emm Seagram was a Canadian distillery founder, politician, philanthropist, and major owner of thoroughbred racehorses.

Otto Frederick Roehm was an American wrestler who competed in the 1904 Summer Olympics. In 1904 he lost to William Beckmann in the semifinals of welterweight category and won a gold medal in lightweight category.

Tobias Crawford Norris was a Canadian politician who served as the tenth Premier of Manitoba from 1915 to 1922. Norris was a member of the Liberal Party.

Dr George Harrold "Doc" Campbell was a Canadian dentist and lacrosse player who competed in the 1908 Summer Olympics.

Alice Eastwood was a Canadian American botanist. She is credited with building the botanical collection at the California Academy of Sciences, in San Francisco. She published over 310 scientific articles and authored 395 land plant species names, the fourth-highest number of such names authored by any female scientist. There are seventeen currently recognized species named for her, as well as the genera Eastwoodia and Aliciella.