List of Famous people born in Ontario, Canada

John Hadley Nicanor Hemingway was a Canadian-American fly fisherman, conservationist, and writer. He was the son of American novelist and Nobel Prize-laureate Ernest Hemingway.

Ruth Ellen Brosseau is a Canadian politician who represented the riding of Berthier—Maskinongé in the House of Commons from the 2011 federal election until her defeat in 2019. She is a member of the New Democratic Party (NDP).

Lorne Hyman Greene was a Canadian actor, radio personality, and singer. His notable television roles include Ben Cartwright on the Western Bonanza, and Commander Adama in the original science-fiction television series Battlestar Galactica and Galactica 1980. He also worked on the Canadian television nature documentary series Lorne Greene's New Wilderness, and in television commercials.

Marci Ien is a Canadian politician serving as the Member of Parliament for the riding of Toronto Centre. Previously, she was a broadcast journalist for CTV. She co-hosted the CTV daytime talk show The Social from 2017 until 2020. Previously, she was a reporter for CTV News and a co-anchor on the CTV morning program Canada AM.

Damian Warner is a Canadian track and field athlete specializing in decathlon. He won the silver medal at the 2015 World Championships and was a bronze medalist at the 2013 and 2019 World Championships and at the 2016 Summer Olympics. Warner also was the Commonwealth champion from the Glasgow games and the two-time and reigning Pan American champion from the 2015 and 2019 Games. Warner also holds the title to the Pan Am Games record and the Canadian record for the decathlon. Notable for his sprinting, Warner holds decathlon bests in the 100 m and 110 m hurdles, running a 10.12 and 13.27 respectively.

Frances Ford Seymour Fonda was a Canadian-American socialite. She was the second wife of actor Henry Fonda, and the mother of actors Jane Fonda and Peter Fonda.

Thomas Hamar Greenwood, 1st Viscount Greenwood, PC, KC, known as Sir Hamar Greenwood, Bt, between 1915 and 1929 and as The Lord Greenwood between 1929 and 1937, was a Canadian-born British lawyer and politician. He served as the last Chief Secretary for Ireland between 1920 and 1922. Both his sons died unmarried, so that the title of Viscount Greenwood became extinct in 2003.

Gabrielle Daleman is a Canadian figure skater. She is a 2018 Olympic gold medallist in the team event, the 2017 World bronze medallist, 2017 Four Continents silver medallist, 2014 CS Autumn Classic champion, and two-time Canadian national champion. She represented Canada at the 2014 Winter Olympics in Sochi and at the 2018 Winter Olympics in Pyeongchang.

Vanessa Morgan Mziray, known professionally as Vanessa Morgan, is a Canadian actress. She is known for her roles as Beatrix "Bird" Castro in the MTV teen drama series Finding Carter, as Amanda Pierce in the Family teen comedy series The Latest Buzz, and as Sarah in the Disney Channel/Teletoon film My Babysitter's a Vampire and the television series of the same name. She plays Toni Topaz in The CW teen drama series Riverdale.

Nicholas Suzuki is a Canadian professional ice hockey centre currently playing for the Montreal Canadiens of the National Hockey League (NHL). He was drafted 13th overall by the Vegas Golden Knights in the 2017 NHL Entry Draft.