List of Famous people born in Ontario, Canada

Norman Rostoker was a Canadian plasma physicist known for being a pioneer in developing clean plasma-based fusion energy. He co-founded TAE Technologies in 1998 and held 27 U.S. Patents on plasma-based fusion accelerators.

John Joseph Connolly, was a Canadian parliamentarian.

John Charles "Jack" Major, is a Canadian jurist and was a puisne justice on the Supreme Court of Canada from 1992 to 2005.

Herbert Eser Gray was a prominent Canadian politician. He served as a Member of Parliament for Windsor West for four decades, from 1962 to 2002; and consequently he is one of the longest serving Members of Parliament in Canadian history. He also served as cabinet minister under three prime ministers, and as the seventh deputy prime minister from 1997 to 2002. He was Canada's first Jewish federal cabinet minister. He is one of few Canadians granted the honorific The Right Honourable who was not so entitled by virtue of a position held.

Nicole Lyn is a Canadian television actress. She is known for her role in Student Bodies, a Canadian teen comedy series.

Stockwell Burt Day Jr. is a Canadian former politician, and a member of the Conservative Party of Canada. He is a former cabinet minister in Alberta, who later served as leader of the Canadian Alliance from 2000–01. Day was MP for the riding of Okanagan—Coquihalla in British Columbia and the president of the Treasury Board. He was widely seen as a prominent voice for social conservatives within the Conservative Party. On March 12, 2011, Day announced that he would not be seeking re-election in the 2011 federal election.

Robert Norris Bowden was a Canadian figure skater.

James Gallanders is a Canadian actor. He studied at York University's Faculty of Fine Arts.

Robert Joseph Birgeneau is a Canadian-American physicist and university administrator. He was the ninth chancellor of the University of California, Berkeley from 2004-13, and the fourteenth president of the University of Toronto from 2000-04.

Graham John Yost is a Canadian film and television screenwriter. His best-known works are the films Speed, Broken Arrow, and Hard Rain and the TV series Justified. In 2002, he created the television drama series Boomtown.