Incumbents

• Sovereign: King George V
• Prime Minister: William Lyon Mackenzie King
• Governor General: Viscount Byng
• Premier of Alberta: Herbert Greenfield
• Premier of British Columbia: John Oliver
• Premier of Manitoba: Tobias Norris then John Bracken
• Premier of New Brunswick: Walter E. Foster
• Premier of Nova Scotia: George H. Murray
• Premier of Ontario: Ernest C. Drury
• Premier of Prince Edward Island: John Howatt Bell
• Premier of Quebec: Alexandre Taschereau
• Premier of Saskatchewan: William Martin then Charles Dunning

Events

• January 11: The world's first insulin treatment is made at the Toronto General Hospital. The successful technique would later win a Nobel Prize for its creators, Frederick Banting and Charles Best.
• April 5: Charles Dunning becomes premier of Saskatchewan, replacing William Martin
• May 3: The women of Prince Edward Island win the right to vote
• July: Rodeo's first hornless bronc saddle is designed and made by rodeo cowboy and saddle maker Earl Bascom at the Bascom Ranch, Lethbridge, Alberta
• August 8: John Bracken becomes premier of Manitoba, replacing Tobias Norris
• September 15: Prime Minister Mackenzie King refuses to support the British in the Chanak Affair, asserting foreign policy independence for the first time
• The land around Vimy Ridge is given to Canada by France in gratitude for the Canadian sacrifices during World War I
• October 9: Prairie Bible College opens with 8 students in Three Hills ,Alberta

Arts and literature

• Nanook of the North is released, the first film to be called a documentary

Births

• January 21: Lincoln Alexander, politician
• February 25: Molly Lamb Bobak, artist
• April 24: Philip Gerald Givens, politician
• April 26: Jeanne Sauvé, first female Governor General
• June 9: Fernand Seguin, biochemist
• June 11: Erving Goffman, sociologist
• June 27: Richard Vollenweider, environmentalist
• June 30: Frank Huber, Regina resident
• July 16: Augustin Brassard, politician
• July 30: Jack McClelland, publisher
• August 7: Helmut Kallmann, historian
• August 11: Mavis Gallant, writer
• August 24: René Lévesque, separatist premier of Quebec
• September 1: Yvonne De Carlo, actor
• September 3: Salli Terri, singer and songwriter
• September 16: Alex Barris, actor
• October 17: Pierre Juneau, politician and broadcaster
• December 11: Pauline Jewett, educator

Deaths

• January 26: Robert Beith, politician
• April 12: Robert Boston, politician
• August 2: Alexander Graham Bell, father of the telephone