List of Famous people born in Ontario, Canada

Teresa Stratas, OC, is a retired operatic soprano from Canada of Greek descent. She is especially well known for her award-winning recording of Alban Berg's Lulu.

Charmion King was a Canadian actress.

Michèle Lamont is a sociologist and is the Robert I. Goldman Professor of European Studies and a Professor of Sociology and African American Studies at Harvard University. She served as the 108th President of the American Sociological Association from 2016–2017. In 2017, she received the Erasmus Prize and was awarded 3 honorary doctorates. She has 3 children: Gabrielle Lamont-Dobbin, Chloe Lamont-Dobbin, and Pierre Lamont-Dobbin.

John I. Bitove Jr. is a noted Canadian businessman and sportsman. He is the Founder of the Toronto Raptors of the NBA. Through his holding company, Obelysk, he is involved in several entities including; Sirius XM Canada, Canada's largest subscriber radio service. He is the founder of Mobilicity, a mobile wireless service, which was sold to Rogers Communications in July, 2015. He was also the major shareholder of KEYreit, Canada's largest "small box" real estate investment trust that was sold in 2013. In 2015 Bitove co-founded an alternative asset manager, PointNorth Capital.

John Jacob Weinzweig, was a Canadian composer of classical music.

Alexa Ann McDonough is a Canadian politician who became the first woman to lead a major, recognized political party in Canada, when she was elected the Nova Scotia New Democratic Party's (NSNDP) leader in 1980. She served as a member of the Nova Scotia Legislature from 1981 to 1994, representing the Halifax Chebucto and Halifax Fairview electoral districts. She stepped down as the NSNDP's leader and as a member of the legislature in 1994. She subsequently ran for, and was elected, leader of the federal New Democratic Party (NDP) in 1995. McDonough was elected the Member of Parliament (MP) for the federal electoral district of Halifax in 1997. She stepped down as party leader in 2003, but continued to serve as an MP for two more terms, until 2008, when she retired from politics altogether. In 2009, she became the interim president of Mount Saint Vincent University and was appointed an Officer of the Order of Canada in December of that year.

John Paul Manley is a Canadian lawyer, businessman, and politician. He served as Liberal Member of Parliament for Ottawa South from 1988 to 2004, and was the eighth deputy prime minister between 2002 and 2003. From January 2010 until October 2018 he was president and CEO of the Business Council of Canada. He currently serves on the advisory board of the Leaders' Debates Commission.

Paul Sarossy, CSC, BSC, ASC is a Canadian cinematographer and film director. He is known for his collaborations with director Atom Egoyan, serving as his director of photography on twelve feature films.

Manjul Bhargava is a Canadian-American mathematician. He is the Brandon Fradd, Class of 1983, Professor of Mathematics at Princeton University, the Stieltjes Professor of Number Theory at Leiden University, and also holds Adjunct Professorships at the Tata Institute of Fundamental Research, the Indian Institute of Technology Bombay, and the University of Hyderabad. He is known primarily for his contributions to number theory.

Nanci Chambers is a Canadian-born American actress.