1921 in Canada

Crown

• Monarch – George V^[1]

Federal government

• Governor General – Victor Cavendish, 9th Duke of Devonshire (until August 11) then Julian Byng
• Prime Minister – Arthur Meighen (until December 29) then William Lyon Mackenzie King
• Chief Justice – Louis Henry Davies (Prince Edward Island)
• Parliament – 13th (until 4 October)

Provincial governments

Territorial governments

Full date unknown

• The school board in Victoria, British Columbia, creates a segregated school for the Chinese population. After a boycott of the new school, the plan is scrapped.^[3]
• A study of Saskatchewan school students discovers that 56% of them are infected with tuberculosis^[4]
• Mary Ellen Smith in British Columbia becomes the first woman cabinet minister in Canada.
• The Cenotaph, Montreal, is unveiled
• The War Memorial of Montreal West is unveiled

January to March

• January 6 – Hazen Argue, politician (d. 1991)
• January 9 – Lister Sinclair, broadcaster, playwright and polymath (d. 2006)
• January 20 – Jacques Ferron, physician and author, founder of the Parti Rhinocéros (d. 1985)
• February 8 – Barney Danson, politician and soldier (d. 2011)
• February 11 – Johnny Fripp, skier and football player (d. 2022)
• February 14 – Hazel McCallion, politician and 5th Mayor of Mississauga (d. 2023)
• February 17 – Muriel Coben, baseball and curling player (d. 1979)
• February 21 – George Manuel, Aboriginal leader (d. 1989)
• February 25 – Pierre Laporte, Quebec politician and Minister, kidnapped and murdered by Front de libération du Québec (FLQ) (d. 1970)
• March 10 – Cec Linder, actor (d. 1992)
• March 27 – Calvin Gotlieb, professor and computer scientist (d. 2016)

April to June

• April 1 – Ken Reardon, ice hockey player (d. 2008)
• April 4 – Charles Dubin, lawyer and former Chief Justice of Ontario (d. 2008)
• April 30 – Don Jamieson, politician, diplomat and broadcaster (d. 1986)
• May 5 – Jim Conacher, ice hockey player (d. 2020)
• May 12 – Farley Mowat, conservationist and author (d. 2014)
• May 31 – Peter Fox, politician (d. 1989)
• June 8 – Alexis Smith, actress (d. 1993)
• June 25
  • Yves Forest, politician (d. 2019)
  • Celia Franca, ballet dancer and founder and artistic director of the National Ballet of Canada (d. 2007)

July to December

• July 1 – Arthur Johnson, sprint canoeist (d. 2003)
• July 6 – Allan MacEachen, politician, Minister and senator, first Deputy Prime Minister of Canada (d. 2017)
• August 4 – Maurice Richard, ice hockey player (d. 2000)
• August 8 – John Herbert Chapman, scientist and space researcher (d. 1979)
• August 11 – Allan Waters, businessman and media mogul (d. 2005)
• August 25 – Monty Hall, game show host, producer, actor, singer and sportscaster (d. 2017)
• September 5 – Murray Henderson, hockey player (Boston Bruins) (d. 2013)
• September 14 – A. Jean de Grandpré, lawyer and businessman (d. 2022)
• September 15 – Norma MacMillan, voice actress (d. 2001)
• September 16 – Ursula Franklin, metallurgist, research physicist, author and educator (d. 2016)
• September 29 – James Cross, British diplomat kidnapped by the Front de libération du Québec (FLQ) (d. 2021)
• November 25 – Fraser Elliott, lawyer, supporter of the arts and philanthropist (d. 2005)
• December 4 – Deanna Durbin, singer and actress (d. 2013)
• December 6 – George Beurling, most successful Canadian fighter pilot of World War II (d. 1948)
• December 7 – Eric Blackwood, aviator (d. 2007)
• December 10
  • James Foort, inventor and artist (d. 2020)
  • Howard Fredeen, scientist and animal breeding researcher (d. 2021)

Full date unknown

• Fred Davis, broadcaster and moderator of Front Page Challenge (d. 1996)