See also: 1919 in Canada, other events of 1920, 1921 in Canada and the Timeline of Canadian history.

Events

The Capitol Cinema in Ottawa opens on November 8

• January 10: Canada is a founding member of the League of Nations
• February 1: The Royal Northwest Mounted Police renamed the Royal Canadian Mounted Police
• February 14: Université de Montréal founded
• February 26: First Nations people win the right to vote
• April 1: The Ottawa Senators win the Stanley Cup, defeating the Seattle Metropolitans
• May 7: The first exhibit of art by the Group of Seven opens in Toronto
• May 14: Canadian Forum magazine founded
• July 9: Louis-Alexandre Taschereau becomes premier of Quebec, replacing Sir Lomer Gouin
• July 10: Arthur Meighen becomes prime minister, replacing Sir Robert Borden
• November 8: The Capitol Cinema opens in Ottawa, the capital's only true movie palace
• Women become eligible to sit in the House of Commons
• The Japanese Labour Union is formed
• The Dominion Elections Act is passed creating the position of Chief Electoral Officer.

Births

• January 4: James William Baskin, politician
• January 4: Douglas Pimlott, biologist
• January 7: Margaret Thompson, scientist
• January 12: Bill Reid, artist
• February 23: Paul Gérin-Lajoie, Quebec politician
• February 25: Merrill Edwin Barrington, politician
• February 25: Gérard Bessette, author
• March 3: James Doohan, actor
• March 19: Cyril Lloyd Francis, politician
• April 2: Gerald Keith Bouey, Governor of the Bank of Canada
• May 2: William deWitt Hutt, actor
• May 5: Bill Hunter, hockey player
• May 8: Harry Rankin, politician
• May 27: Peter Dmytruk, Second World War military hero
• June 6: Jan Rubes, Opera singer and director
• June 14: Stanley Waters, senator
• June 24: Joe Greene, politician
• July 12: Pierre Berton, author
• August 3: Lucien Lamoureux, politician
• August 24: Alex Colville, artist
• September 11: Emile Bouchard, hockey player
• September 11: Dalton Camp, political operative
• September 26: Edmund Tobin Asselin, politician
• October 1: Charles Daudelin, sculptor
• October 13: Evelyn Dick, murderer
• November 11: John Ferguson Browne, politician
• November 18: George Johnson, Manitoba politician

Deaths

• November 19: Byron Moffatt Britton, politician