Head of state (monarch) – King George V (consort – Mary of Teck)
Governor general – Julian Byng (viceregal consort – Evelyn Byng)
Prime minister – William Lyon Mackenzie King
Lieutenant Governor of Alberta – Robert Brett (until October 29) then William Egbert
Lieutenant Governor of British Columbia – Walter Cameron Nichol
Lieutenant Governor of Manitoba – James Albert Manning Aikins
Lieutenant Governor of New Brunswick – William Frederick Todd
Lieutenant Governor of Nova Scotia – MacCallum Grant (until January 12) then James Robson Douglas (January 12 to September 14) then James Cranswick Tory
Lieutenant Governor of Ontario – Henry Cockshutt
Lieutenant Governor of Prince Edward Island – Frank Richard Heartz
Lieutenant Governor of Quebec – Narcisse Pérodeau
Lieutenant Governor of Saskatchewan – Henry William Newlands
Premier of Alberta – Herbert Greenfield (until November 23) then John Edward Brownlee
Premier of British Columbia – John Oliver
Premier of Manitoba – John Bracken
Premier of New Brunswick – Peter Veniot (until September 14) then John Baxter
Premier of Nova Scotia – Ernest Howard Armstrong (until July 16) then Edgar Nelson Rhodes
Premier of Ontario – George Howard Ferguson
Premier of Prince Edward Island – James D. Stewart
Premier of Quebec – Louis-Alexandre Taschereau
Premier of Saskatchewan – Charles Avery Dunning
Gold Commissioner of Yukon – George P. MacKenzie (until April 1) then Percy Reid
Commissioner of Northwest Territories – William Wallace Cory
February 5 - Post Office workers are brought under civil service regulations.
February 24 - The Lake of the Woods Treaty works out joint Canadian-American control of the Lake of the Woods.
April 13 - Women win the right to vote in Newfoundland.
May 28 - Roddick Gates unveiled in Montreal.
June 2 - Saskatchewan general election, 1925: Charles Dunning's Liberals win a sixth consecutive majority
June 10 - The United Church of Canada opens for services.
June 11 - Coal miner William Davis was killed by police in the culmination of a long Cape Breton Island strike.
June 23 - First ascent of Mount Logan, the highest mountain in Canada.
June 26 - A strike of miners in Drumheller, Alberta ends in violent confrontations.
July 16 - Edgar Rhodes becomes premier of Nova Scotia, replacing Ernest Armstrong.
September 14 - John Baxter becomes premier of New Brunswick, replacing Peter Veniot
October 29 - Federal election: Arthur Meighen's Conservatives win a plurality (116 seats), defeating Mackenzie King's Liberals (99 seats). However, King does not resign as prime minister; he will try to govern with a minority government with the support of smaller parties and independent MPs (30 seats)
November 23 - John Brownlee becomes premier of Alberta, replacing Charles Stewart
The Canadian Legion of the British Empire Service League, later the Royal Canadian Legion, is formed by the amalgamation of several veterans' organizations, such as the Great War Veterans Association.
The federal divorce law was changed to allow a woman to divorce her husband on the same grounds that a man could divorce his wife - simple adultery. Before this, a woman had to prove adultery in conjunction with other acts such as "sodomy" or bestiality in order to initiate a divorce.
October 1 - The Vancouver School of Applied and Decorative Arts opened its doors.
March 30 - The Victoria Cougars are the last non-NHL team to win the Stanley Cup.
January 26 - Claude Ryan, politician (d.2004)
February 1 - Hugh Horner, politician, physician and surgeon (d.1997)
February 13 - Gerald Tailfeathers, artist
March 2 - Bernard Jean, lawyer and politician, member (1960–1970) and Speaker (1963–1966) of the Legislative Assembly of New Brunswick (d.2012)
March 23 - Wilson Duff, anthropologist (d.1976)
March 25 - Daniel Yanofsky, chess player, Canada's first chess grandmaster (d.2000)
March 26 - Ben Mondor, baseball executive (Pawtucket Red Sox) (d. 2010)
April 1 - Tobie Steinhouse, artist
April 4 - Claude Wagner, judge and politician (d.1979)
April 11 - Pierre Péladeau, businessman (d.1997)
May 18 - Robin Blaser, author and poet (d.2009)
July 25 - Charmion King, actress (d.2007)
July 29 - Ted Lindsay, ice hockey player
August 2 - William Andres, politician (d.2010)
August 11 - Floyd Curry, ice hockey player (d.2006)
August 15 - Oscar Peterson, jazz pianist and composer (d.2007)
September 4 - Calvin Ruck, anti-racism activist and Senator (d.2004)
September 11 - Harry Somers, composer (d.1999)
September 24 - Dan Heap, politician
October 2 - Wren Blair, hockey coach and manager (Minnesota North Stars, Pittsburgh Penguins) (d.2013)
October 6 - Bud Olson, politician, Minister and Senator (d.2002)
October 12 – Denis Lazure, politician (d.2008)
October 21 - Peter Dickinson, architect (d.1961)
October 21 - Louis Robichaud, lawyer, politician and 25th Premier of New Brunswick (d.2005)
November 8 - Allan Lawrence, politician and Minister (d.2008)
November 10 - Doris Anderson, author, journalist and women's rights activist (d.2007)
November 12 - Agnes Nanogak, illustrator
December 5 - Dave Broadfoot, comedian
December 25 - Robert Layton, politician (d.2002)
January 25 - Charles-Eusèbe Dionne, naturalist and taxidermist (b.1845)
March 3 - William Pugsley, lawyer, politician and 10th Premier of New Brunswick (b.1850)
March 16 - Richard Butler, editor, publisher, journalist and U.S. vice-consul (b.1834)
May 4 - James Cunningham, merchant and politician (b.1834)
May 25 - Margaret Mick, prison guard, first female Canadian peace officer to be killed in the line of duty (b.1860)
June 18 - William Brymner, art teacher and painter (b.1855)
August 15 - Adam Beck, politician and hydro-electricity advocate (b.1857)
September 6 - George Henry Bradbury, politician (b.1859)
November 2 - James Alexander Lougheed, businessman and politician (b.1854)
1925 in Canada Wikipedia
Events from the year 1925 in Canada.