List of Famous people born in Ontario, Canada

Omar Ahmed Said Khadr is a Canadian citizen who at the age of 15 was detained by the United States at Guantanamo Bay for ten years, during which he pleaded guilty to the murder of U.S. Army Sergeant 1st Class Christopher Speer and other charges. He later appealed his conviction, claiming that he falsely pleaded guilty so that he could return to Canada where he remained in custody for three additional years. Khadr sued the Canadian government for infringing his rights under the Charter of Rights and Freedoms; this lawsuit was settled in 2017 with a CA$10.5 million payment and an apology by the federal government.

Katheryn Winnick is a Canadian actress. She is known for her roles in Amusement (2008), Bones (2010), A Glimpse Inside the Mind of Charles Swan III (2012), Vikings (2013–2020), The Art of the Steal (2013), Polar (2019), and Wu Assassins (2019).

Adam Joseph Copeland is a Canadian professional wrestler and actor who is currently signed to WWE under the ring name Edge.

Sarah Louise Christine Chalke is a Canadian actress, model and voice artist. She is known for portraying Elliot Reid on the NBC/ABC comedy series Scrubs, the second Becky Conner on the ABC sitcom Roseanne, Stella Zinman on the CBS sitcom How I Met Your Mother, and Beth Smith on Adult Swim's adult animated science-fiction series Rick and Morty. She also had a recurring role on the third season of the ABC/TBS sitcom Cougar Town. She guest starred as Melanie Hertzal, a "special needs supermom" on ABC's Speechless, a recurring character who was at first the nemesis and then business partner of the DiMeo family matriarch.

Karla Leanne Homolka, also known as Leanne Teale, is a Canadian serial killer and rapist who, with her first husband Paul Bernardo, raped and killed at least three minors between 1990 and 1992. Homolka attracted worldwide media attention when she was convicted of manslaughter following a plea bargain to serve only 12 years in the rape-murders of two Ontario teenage girls, Leslie Mahaffy and Kristen French, as well as the rape and death of her sister Tammy. Homolka and Bernardo were arrested in 1993. Bernardo was convicted of the Mahaffy-French murders and received life imprisonment and a dangerous offender designation, the full maximum sentence allowed in Canada.

Rino Romano is a Canadian voice, film and television actor.

Andrew James Scheer is a Canadian politician who served as the leader of the Conservative Party of Canada and leader of the Official Opposition from 2017 until 2020. Scheer has been the member of Parliament (MP) for Regina—Qu'Appelle since 2004.

Andre De Grasse is a Canadian sprinter. He won the silver medal in the 200 m and bronze medals in both the 100 m and 4×100 m relay at the 2016 Summer Olympics in Rio de Janeiro. De Grasse was the Pan American champion and the NCAA champion in the 100 m and 200 m. De Grasse won the bronze in the 100 m and the 4 × 100 m relay at the 2015 World Athletics Championships in Beijing. He also won the bronze in the 100 m and the silver in the 200 m at the 2019 World Athletics Championships in Doha. He is the current Canadian record holder in the 200m.

Michael John Myers OC is a British-Canadian actor, comedian, screenwriter, producer and director, known for his run as a performer on Saturday Night Live from 1989 to 1995 and for playing the title roles in the Wayne's World, Austin Powers and Shrek film franchises. He made his directorial debut with the documentary Supermensch: The Legend of Shep Gordon (2013). He semi-retired from acting in 2012, though he had supporting roles in Terminal and Bohemian Rhapsody.

Stephen Joseph Harper is a Canadian economist and politician who served as the 22nd prime minister of Canada for nearly a decade, from February 6, 2006, to November 4, 2015. Harper has served as the chairman of the International Democrat Union since February 2018. Over his career, Stephen Harper was elected to the House of Commons seven times, and served nine years as prime minister of Canada, winning three elections as party leader. Harper was the first prime minister to come from the modern Conservative Party of Canada, though older centre-right conservative parties have been active since Canada's founding.