Head of state (monarch) – Queen Elizabeth II (consort – Prince Philip, Duke of Edinburgh)
Governor general – Vincent Massey (viceregal consort – Alice Massey)
Prime minister – John Diefenbaker
Lieutenant Governor of Alberta – John J. Bowlen
Lieutenant Governor of British Columbia – Frank Mackenzie Ross
Lieutenant Governor of Manitoba – John Stewart McDiarmid
Lieutenant Governor of New Brunswick – David Laurence MacLaren (until June 5) then Joseph Leonard O'Brien
Lieutenant Governor of Newfoundland – Campbell Leonard Macpherson
Lieutenant Governor of Nova Scotia – Alistair Fraser (until January 15) then Edward Chester Plow
Lieutenant Governor of Ontario – John Keiller MacKay
Lieutenant Governor of Prince Edward Island – Thomas William Lemuel Prowse (until March 31) then Frederick Walter Hyndman
Lieutenant Governor of Quebec – Gaspard Fauteux (until February 14) then Onésime Gagnon
Lieutenant Governor of Saskatchewan – William John Patterson (until February 3) then Frank Lindsay Bastedo
Premier of Alberta – Ernest Manning
Premier of British Columbia – W.A.C. Bennett
Premier of Manitoba – Douglas Campbell (until June 30) then Dufferin Roblin
Premier of New Brunswick – Hugh John Flemming
Premier of Newfoundland – Joey Smallwood
Premier of Nova Scotia – Robert Stanfield
Premier of Ontario – Leslie Frost
Premier of Prince Edward Island – Alex Matheson
Premier of Quebec – Maurice Duplessis
Premier of Saskatchewan – Tommy Douglas
Commissioner of Yukon – Frederick Howard Collins
Commissioner of Northwest Territories – Robert Gordon Robertson
January 16 – Louis St. Laurent is replaced by Lester B. Pearson as leader of the Liberal Party
February 19–20 – Rt Hon Ellen Fairclough first woman of the role of Prime Minister for two days during John Diefenbaker's absence from the country.
March 25 – The Avro Arrow flies for the first time
March 31 – John Diefenbaker leads the Progressive Conservative Party of Canada to a massive election victory.
April 5 – The Seymour Narrows is made more easily passable after Ripple Rock was destroyed in one of the largest planned non-nuclear explosions
May 12 – The North American Aerospace Defense Command (NORAD) agreement is signed between the United States and Canada.
June 17 – The Second Narrows Bridge in Vancouver collapses killing 18.
June 30 – Duff Roblin sworn in as premier of Manitoba
July 1 – Canada-wide television broadcasting starts
July 1 – The Lost Villages in Ontario are permanently flooded as part of the St. Lawrence Seaway construction project.
October 22 – Canada appoints, Margaret Meagher, the country's first female ambassador, to Israel.
October 23 – The third Springhill Mining Disaster occurs killing 74.
Ellen Fairclough becomes Canada's first federal female cabinet minister.
Department of Physical Education started at the University of Saskatchewan
July 16 – The Manitoba Theatre Centre opens.
John Kenneth Galbraith's The Affluent Society
Farley Mowat's Coppermine Journey: An Account of a Great Adventure
Antonine Maillet's first novel Pointe-aux-Coques
See 1958 Governor General's Awards for a complete list of winners and finalists for those awards.
Stephen Leacock Award: Eric Nicol, Girdle Me A Globe
Morley Callaghan's Now That April's Here is made into a feature film
Allan Dwan directs his last film Enchanted Island
Paul Anka has four hit singles and becomes one of the most popular singers in the world.
Grey Cup – Winnipeg Blue Bombers win 35–28 over the Hamilton Tiger-Cats.
Stanley Cup – Montreal Canadiens win 4–2 over the Boston Bruins.
NASCAR Grand National Series – American race car driver Lee Petty wins the 1958 Jim Mideon 500.
January 29 – Glen Cochrane, ice hockey player and scout
February 15 – Peter Butler, long-distance runner
February 23 – Bob Stephen, Canadian football player (d.2009)
March 8 – Raymond Simard, politician
April 7 – Ted Nolan, ice hockey player and coach
April 17 – Laslo Babits, javelin thrower
May 10 – Gaétan Boucher, speed skater and double Olympic gold medalist
May 18 – Bob Chaperon, snooker and billiards player
June 24 – Jean Charest, lawyer and politician, 29th Premier of Quebec
July 12 – Tonya Lee Williams, actress
July 28 – Terry Fox, humanitarian, athlete and cancer treatment activist (d.1981)
August 6 – Lorne Saxberg, television journalist and news anchor (d.2006)
August 15 – Craig MacTavish, ice hockey player and coach
August 17 – Kirk Stevens, snooker player
August 19 – Darryl Sutter, ice hockey player and coach
August 22 - Colm Feore, American-born stage, film and television actor
August 29 – Linda Staudt, long-distance runner
September 16 – Jennifer Tilly, actress and poker player
September 17 – Monte Solberg, politician and Minister
September 28 – Angella Taylor-Issajenko, sprinter
October 8 – Neile Graham, poet and scholar
November 3 – Kevin Sorenson, politician
November 6 – Kevin Doherty, judoka
November 19 – Joe Jordan, politician
December 12 – Lucie Guay, canoe racer
December 25 – Alannah Myles, singer-songwriter
Kim Rabot (d.1975)
Gordon Stewart Anderson, writer (d.1991)
January 7 – Margaret Anglin, actress, director and producer (b.1876)
January 16 – Charles Bélec, politician (b.1872)
April 1 – J. Arthur Ross, politician (b.1893)
May 12 – Lewis Stubbs, judge and politician (b.1878)
June 26 – George Orton, middle-distance runner and Olympic gold medalist, first Canadian to win an Olympic medal (b.1873)
July 21 – Joseph Oscar Lefebre Boulanger, politician and lawyer (b.1888)
September 2 – George Stewart Henry, politician and 10th Premier of Ontario (b.1871)
September 11 – Camillien Houde, politician and four-time mayor of Montreal (b.1889)
September 11 – Robert W. Service, poet and writer (b.1874)
October 2 – Charles Avery Dunning, politician, Minister and university chancellor (b.1885)
November 10 – Billy Boucher, ice hockey player (b.1899)
1958 in Canada Wikipedia
Events from the year 1958 in Canada.