List of Famous people born in Ontario, Canada

Henry Czerny is a Canadian stage, film, and television actor. He is known for his roles in the films The Boys of St. Vincent, Mission: Impossible, Clear and Present Danger, The Ice Storm, The Exorcism of Emily Rose, Fido, Remember, and Ready or Not and has appeared in numerous television programs in both guest and starring roles, including a regular role as Conrad Grayson on the ABC primetime soap opera Revenge.

Catherine Mary McKenna is a Canadian Liberal politician, who was elected to represent the riding of Ottawa Centre in the House of Commons of Canada in the 2015 federal election. She served as Minister of Environment and Climate Change in the Cabinet headed by Justin Trudeau and was then moved to Minister of Infrastructure and Communities in the reshuffle following the 2019 federal election.

Melissa Humana-Paredes is a female Canadian beach volleyball player, who is partnered with Sarah Pavan. She plays as a left-side defender. The pair won the women's gold medal at the 2019 Beach Volleyball World Championships.

Devon Bostick is a Canadian actor known for playing Rodrick Heffley in the first three Diary of a Wimpy Kid movies, the lead role of Simon in the Atom Egoyan-directed film Adoration, Brent in Saw VI, and Jasper Jordan on The CW television series The 100 from 2014 to 2017.

Thomas John Laidlaw is a retired Canadian ice hockey defenceman.

Maxwell Johannes Domi is a Canadian professional ice hockey player for the Columbus Blue Jackets of the National Hockey League (NHL). He was selected by the Phoenix Coyotes in the first round, 12th overall, of the 2013 NHL Entry Draft.

Cynthia Jean Cameron Breakspeare is a Canadian-Jamaican jazz singer, musician and beauty queen. Breakspeare was crowned Miss World 1976. Breakspeare is the mother of reggae musician Damian Marley, through her relationship with Bob Marley, who remained married to Rita Marley until his death. Bob Marley is said to have written the song ‘Turn Your Lights Down Low’ about her.

Scott Foster is a Canadian accountant and amateur ice hockey player. He appeared in one game for the Chicago Blackhawks of the National Hockey League (NHL) near the end of the 2017–18 season as an emergency goaltender following injuries to the team's starting and backup goaltenders, becoming the first emergency goaltender to be called into a game due to injuries in recent years.

Josée Forest-Niesing was a Canadian lawyer and politician, who was appointed to the Senate of Canada in October 2018.

Leonard Patrick "Red" Kelly was a Canadian professional ice hockey player and coach. He was also a Liberal Member of Parliament for the Toronto-area riding of York West from 1962 to 1965, during which time he also won the Stanley Cup—twice—while actively playing for the Toronto Maple Leafs. Kelly played on more Stanley Cup-winning teams (eight) than any other player who never played for the Montreal Canadiens; Henri Richard (11), Jean Beliveau (10), Yvan Cournoyer (10) and Claude Provost (9) won their Cups with the Canadiens. He was also the only player to have never played for the Canadiens to be part of two of the nine dynasties recognized by the National Hockey League (NHL) in its history.