See also: 1916 in Canada, other events of 1917, 1918 in Canada and the list of 'years in Canada'.

---

Events

• A temporary income tax is introduced to cover wartime expenses.
• February 1 - James A. Murray becomes premier of New Brunswick, replacing George J. Clarke
• April 4 - Walter Foster becomes premier of New Brunswick, replacing James A. Murray
• April 9 to April 12 - Battle of Vimy Ridge.
• June 7 - Alberta election : Arthur Sifton's Liberals win a fourth consecutive majority
• June 21 - Aubin Arsenault becomes premier of Prince Edward Island, replacing John Mathieson
• June 26 - Saskatchewan election : William Martin's Liberals win a fourth consecutive majority
• July 31 to November 6 - Battle of Passchendaele.
• August - The governement introduces consription triggering the Conscription Crisis of 1917
• September 20 - The Wartime Elections Act gives female relatives of servicmen the vote.
• October 30 - Charles Stewart (1868-1946) becomes premier of Alberta, replacing Arthur Sifton
• December 6 - Halifax explosion kills 2000 people and injures 9000. The largest ever man-made explosion pre-Hiroshima atomic bomb.
• December 17 - Federal election: Robert Borden's Conservatives win a second consecutive majority