List of Famous people born in Ontario, Canada

Thomas Christopher Collins is a Canadian cardinal of the Catholic Church. He is the tenth and current Archbishop of Toronto, having previously served as Bishop of Saint Paul in Alberta (1997–1999) and Archbishop of Edmonton (1999–2006). On 6 January 2012, Pope Benedict XVI appointed him a cardinal at the 18 February 2012 consistory.

Jean Gratton was the Roman Catholic bishop of the Roman Catholic Diocese of Mont-Laurier, Canada.

Dewey Martin was a Canadian rock drummer, best known for his work with Buffalo Springfield.

Michael Barry is a Canadian author and former professional road racing cyclist. Barry raced for numerous world-class teams with the role of 'domestique'. His greatest personal successes were placing eighth in the 2008 Beijing Olympics' road race, finishing second in the Canadian National Road Race Championships in 2001 and 2012, and winning a stage of the Tour of Missouri in 2008. He announced his retirement in September 2012, stating that the 2012 Tour of Beijing would be his last race. He is also an author who has written three books.

Stuart Sinclair Garson, was a Canadian politician and lawyer. He served as the 12th Premier of Manitoba from 1943 to 1948, and later became a Federal cabinet minister.

Brittney Shannon Tam is a Canadian badminton player. In 2012, she won a silver medal at the Pan Am Junior Badminton Championships in the mixed doubles event. In 2016, she won the gold medal in the mixed team event at the Pan Am Badminton Championships. In the individual event, she won the gold medals in the women's singles and mixed doubles event. She competed at the 2018 Commonwealth Games in Gold Coast.

David Charles Rotenberg, usually known as David Rotenberg, is a Canadian author and professor emeritus of theatre studies at York University, where he taught graduate students for over 25 years, as well at the Professional Actors Lab in Toronto, which he founded as the artistic director. David Rotenberg has been referred to as one of Canada's "most notable acting teachers and coaches," and may be the nation's best known master acting teacher. During the formative part of his career, he was a theatre director in New York City and staged two Broadway shows, returning to Toronto in 1987. In 1994, he directed the first Canadian play to be staged in the People's Republic of China, which inspired his career as a novelist, beginning with the five Zhong Fong mysteries set in modern Shanghai as well as the historical fiction novel Shanghai. After writing a series of speculative thrillers set in The Junction, Toronto, He began a science fiction series in 2017.

Sangita Patel is a Canadian television personality, currently the host of HGTV's Home to Win and an on-air personality of Entertainment Tonight Canada.

Martina Sorbara is a Canadian singer-songwriter and frontwoman of the band Dragonette.

Vanessa Crone is a Canadian ice dancer. She skated with Paul Poirier from 2001 to 2011, becoming the 2010 Grand Prix Final bronze medallist, 2011 Four Continents bronze medallist, 2008 World Junior silver medallist, and 2011 Canadian national champion.