List of Famous people born in Ontario, Canada

George Leslie Mackay 偕瑞理 or 馬偕 Má-kai was the first Presbyterian missionary to northern Taiwan. He served with the Canadian Presbyterian Mission. Mackay is among the best known Westerners to have lived in Taiwan.

Suzanne Cloutier was a Canadian film actress.

Matthew Peca is a Canadian professional ice hockey forward currently playing for the St. Louis Blues of the National Hockey League (NHL). He was selected by the Tampa Bay Lightning in the seventh round of the 2011 NHL Entry Draft. After playing four years at Quinnipiac University, he made his NHL debut during the 2016–17 season.

Ilario Enrico "Eli" Pasquale was a Canadian basketball player. A 6-foot, 1-inch point guard, he led the Canadian national men's basketball team during two Olympic Games, three FIBA World Championships, and two Pan American Games.

Carmen Lombardo was the younger brother of bandleader Guy Lombardo. He was a vocalist and composer.

Christine Girard is a Canadian weightlifter from White Rock, British Columbia. She competes in the 63 kg division. Girard was the first Canadian female to win a medal in weightlifting when she won gold at the 2012 London Olympics. She also won Commonwealth Games and Pan American Games titles in her weight class and has won multiple medals in each of those competitions. She holds the Commonwealth games record and the Pan-American Games record in the Clean and Jerk.

John Kenneth Galbraith, also known as Ken Galbraith, was a Canadian-American economist, diplomat, public official and intellectual. A leading proponent of 20th-century American liberalism, his books on economic topics were bestsellers from the 1950s through the 2000s. As an economist, he leaned toward post-Keynesian economics from an institutionalist perspective.

Lottie Pickford was a Canadian-born silent film actress and socialite. She was the younger sister of fellow actress Mary Pickford and elder sister of actor Jack Pickford.

Margaret Birch was a Canadian politician in Ontario. She was a Progressive Conservative member of the Legislative Assembly of Ontario from 1971 to 1985 who represented the east Toronto riding of Scarborough East. She served as a cabinet minister in the government of William Davis. She was the first female cabinet minister in Ontario.