1915 in Canada

• January 4 – WWI: Princess Patricia's Canadian Light Infantry becomes the first Canadian troops sent to the front lines
• January 15 – The Canadian Northern Railway line to Vancouver, British Columbia, is completed
• February 2 – WW1: Attempt to bomb the Vanceboro international bridge between the Canadian-US border by a German spy
• February 4 – WW1: After a training accident, Lieutenant W. F. Sharpe becomes the first Canadian military airman killed
• February 14 – WW1: The 1st Canadian Division arrives in France
• February 21 – Nellie McClung presents a petition to the Alberta Legislature demanding women's suffrage
• February 28 – WWI: Canadian troops launch the first trench raid of the war; by the end of the conflict Canadian troops will be regarded as the experts at this manoeuvre
• April 22 – WWI: In the Second Battle of Ypres Canadian forces bear the brunt of the first large-scale chemical weapons attack on the Western Front. They devise makeshift gas masks of urine-soaked rags and hold their ground
• May 3 – "In Flanders Fields" is written by Canadian poet John McCrae.
• May 12 – Tobias Norris becomes premier of Manitoba, replacing Sir Rodmond Roblin
• July 5 – The Hotel Macdonald in Edmonton opens
• August 6 – Manitoba General Election
• September 13 – WWI: with the arrival of the 2nd Canadian Division a separate Canadian Corps is created
• October 9 – WWI: The 3rd Canadian Division arrives in France
• December 15 – William John Bowser becomes premier of British Columbia, replacing Richard McBride
• December 19 – WW1: Captain M.M. Bell-Irving, No.1 Squadron, Royal Flying Corps, achieves the first aerial victory by a Canadian when he shot down a German aircraft

• March 26 – The Pacific Coast Hockey Association's Vancouver Millionaires win their First and only Stanley Cup by defeating the National Hockey Association's Ottawa Senators 3 games to 0. All games played at Vancouver's Denman Arena
• November 20 – Hamilton Tigers win their 2nd Grey Cup by defeating the Toronto Rugby and Athletic Association 13 to 7 in the 7th Grey Cup played at Toronto's Varsity Stadium

• January 18 – Thomas Bain, politician and Speaker of the House of Commons of Canada (b. 1834)

Charles Tupper

• June 14 – Antoine Audet, politician (b. 1846)
• July 22 – Sandford Fleming, engineer and inventor (b. 1827)
• August 10 – William Mortimer Clark, lawyer, politician and Lieutenant Governor of Ontario (b. 1836)
• September 10 – Charles Boucher de Boucherville, politician and 3rd Premier of Quebec (b. 1822)
• September 11 – William Cornelius Van Horne, pioneering railway executive (b. 1843)
• September 15 – Ernest Gagnon, folklorist (b. 1834)
• October 19 – Neil McLeod, lawyer, judge, politician and Premier of Prince Edward Island (b. 1842)
• October 30 – Charles Tupper, politician, Premier of Nova Scotia and 6th Prime Minister of Canada (b. 1821)
• December 25 – Graham Fraser (industrialist) (b. 1845)

• List of Canadian films

Canadian Lt. Col. John McCrae's poem "In Flanders Fields" is published in Punch magazine [2]

Nursing sister Capt. Sophie Hoerner notes her hard work and praises her patients [3]

Canadian prisoners of war tell German captors why they're fighting against Germany [4]

Future minister of national defence George Pearkes describes trench duty conditions [5]

Canadian soldier feels homicidal after friend's brother found dead on battlefield and their family perhaps lost in Lusitania sinking [6]

Brant County, Ont. leaders thank Six Nations following death of Lt. Cameron Brant [7]

Officer describes huge training camp at Valcartier, Quebec [8]

Soldier's letter about visiting friends and touring palaces in England, then getting arrested for returning late to camp [9]

Canada's hundreds of growing towns should deter growth of slums found in its big cities [10]

Saskatchewan government revokes liquor licences [11]