List of Famous people born in Ontario, Canada

Mark Lee, known professionally as Mark, is a Canadian rapper, singer and songwriter based in South Korea. He is a member of the South Korean boy group NCT and its sub-units NCT U, NCT 127, and NCT Dream. Mark debuted in April 2016 as a member of the rotational unit NCT U before becoming a member of the Seoul-based fixed unit NCT 127 in July 2016 and NCT Dream in August 2016. Mark joined the supergroup SuperM in October 2019.

Brandon Raymond James Prust is a Canadian former professional ice hockey left winger. Prust was drafted in the third round, 70th overall, by the Calgary Flames in the 2004 NHL Entry Draft, and has played in the NHL for the Flames, Phoenix Coyotes, New York Rangers, Montreal Canadiens and Vancouver Canucks.

Mauril Adrien Jules Bélanger was a Canadian politician.

Travis James Dermott is a Canadian professional ice hockey defenceman currently playing for the Toronto Maple Leafs of the National Hockey League (NHL). Before turning professional, Dermott was rated as a top prospect who was projected as a possible first round pick in the 2015 NHL Entry Draft. He was ultimately selected in the second round, 34th overall, by the Maple Leafs.

Leah Renee Cudmore, often credited as Leah Cudmore or Leah Renee, is a Canadian actress and singer.

Brett Jordan Dier is a Canadian actor. He is best known for his role as Michael Cordero Jr. on Jane the Virgin. He is also known for his recurring roles on the Canadian TV shows Bomb Girls and The L.A. Complex, and most recently for his main role as "C.B." on the ABC sitcom Schooled.

Nicholas Spaling is a Canadian former professional ice hockey centre. He last played with Genève-Servette HC of the National League (NL). He was drafted 58th overall by the Nashville Predators in the 2007 NHL Entry Draft. He played his three-year major junior career with the Kitchener Rangers of the Ontario Hockey League.

On 11 December 1962, Ronald Turpin was one of the two last people to be executed in Canada. Turpin had been convicted of the murder of Metropolitan Toronto police officer Frederick Nash. Nash had pulled Turpin over for a broken taillight while the latter was fleeing a robbery. The method of execution was hanging, and the sentence was carried out at the Toronto (Don) Jail.

Michael Holcombe Wilson was a Canadian businessman, politician and diplomat. He was the Chairman of Barclays Capital Canada Inc. from May 2010 until his death in February of 2019. He was a Bay Street investment executive when he was elected to the House of Commons of Canada as a Progressive Conservative Member of Parliament in the 1979 general election. He served in various portfolios in the governments of Joe Clark and Brian Mulroney between 1979 and 1993. He was the Canadian Ambassador to the United States from 2006 until 2009, when he was succeeded by Gary Doer.

Linda Mary Alice Thom,, née Malcolm, is a Canadian Olympic gold medal-winning shooter.