List of Famous people born in Ontario, Canada

Matthew Duchene is a Canadian professional ice hockey centre who currently plays for the Nashville Predators of the National Hockey League (NHL). He has previously played in the NHL for the Colorado Avalanche, Ottawa Senators, and Columbus Blue Jackets. Duchene was selected third overall by the Avalanche in the 2009 NHL Entry Draft. He won a gold medal with Canada at the 2014 Winter Olympics.

Zack Adam Kassian is a Canadian professional ice hockey winger currently with the Edmonton Oilers of the National Hockey League (NHL). During his junior career, he won a Memorial Cup with the Windsor Spitfires in 2010. Selected 13th overall in the 2009 NHL Entry Draft, he began his career within the Buffalo Sabres organization before being traded to the Canucks in 2012. He played parts of four seasons with the Canucks before they traded him to the Montreal Canadiens in 2015. Kassian never played for the Canadiens as he was suspended for substance abuse issues, and was traded to the Oilers a few months later.

Pearl Hart was a Canadian-born outlaw of the American Old West. She committed one of the last recorded stagecoach robberies in the United States, and her crime gained notoriety primarily because of her gender. Many details of Hart's life are uncertain, with available reports being varied and often contradictory.

Lindy Booth is a Canadian actress. She played Riley Grant on the Disney Channel series The Famous Jett Jackson and Claudia on Relic Hunter and A.J. Butterfield on the NBC series The Philanthropist. She then played Cassandra Cillian on the TNT series The Librarians (2014–2018).

Mitchell Marner is a Canadian professional ice hockey right winger and alternate captain for the Toronto Maple Leafs of the National Hockey League (NHL). Marner was born in Markham, Ontario, and grew up in Thornhill. He was selected fourth overall by the Maple Leafs in the 2015 NHL Entry Draft.

Paul Edgar Philippe Martin, also known as Paul Martin Jr., is a Canadian politician who served as the 21st prime minister of Canada from December 12, 2003, to February 6, 2006.

Joseph Burr Tyrrell, FRSC was a Canadian geologist, cartographer and mining consultant. He discovered dinosaur (Albertosaurus sarcophagus) bones in Alberta's Badlands and coal around Drumheller in 1884. Canada's Royal Tyrrell Museum of Palaeontology in Alberta was named in his honour.

Hilary Farr is a British-Canadian designer, businesswoman, television host and former actress. She is known as the co-host of the HGTV and W Network television series Love It or List It with David Visentin. She is president of Hilary Farr's Designs, established in Toronto and in New York City.

Gregory C. Johnson was a professional ice hockey player in the National Hockey League with the Detroit Red Wings, Pittsburgh Penguins, Chicago Blackhawks, and Nashville Predators.

Keith Edward Gretzky is a Canadian ice hockey executive and former player who served as interim general manager of the Edmonton Oilers, from January 23 to May 7, 2019. He is a brother of ice hockey legend Wayne Gretzky.