List of Famous people born in Ontario, Canada

Ryan Roth is a Canadian road bicycle racer, who currently rides for Canadian amateur team Hamilton United.

George Washington Orton was a Canadian middle and long-distance runner. In 1900, he became the first Canadian to win a medal at an Olympic Games. He won a bronze in the 400 metre hurdles, and then, 45 minutes later, won the gold medal in the 2500 metre steeplechase.

Alexander Cataford is a Canadian racing cyclist, who currently rides for UCI WorldTeam Israel Start-Up Nation. He won the Under-23 title at the 2013 Canadian National Time Trial Championships. He is a six-time Canadian Junior National Champion. In 2011, he was the Junior Pan American Champion in individual pursuit.

Jason Spevack is a Canadian actor and filmmaker. He is a graduate of The London School of Economics. He has dual citizenship with Canada and the United States. Spevack has appeared in over 40 commercials for radio and television and had a principal role in the TV series Dino Dan. He is perhaps best known for his roles in Fever Pitch, Sunshine Cleaning and Ramona and Beezus, as well as receiving a Young Artist Award nomination as Best Leading Young Actor in a Feature Film for his role in the 2012 comedy film Jesus Henry Christ.

Jeff Cowan is a Canadian former professional ice hockey player. Cowan was a left winger and played 434 games in the National Hockey League (NHL). In 2019, he was named the interim head coach of the Saint John Sea Dogs, a Quebec Major Junior Hockey League team.

John James "Joe" Greene, was a Canadian politician.

John Michael Miller, is a Canadian prelate of the Roman Catholic Church. He is currently Archbishop of Vancouver and its 475,000 Catholics. Miller succeeded to this post in January 2009, after serving as Coadjutor Archbishop from June 1, 2007. He was previously Secretary of the Congregation for Catholic Education, and thus a senior official of the Roman Curia.