This is a timeline of the history of Calgary, Alberta, Canada.

18th century 1787 – Cartographer David Thompson spent the winter with a band of Peigan encamped along the Bow River. He was the first recorded European to visit the area.

19th century 1870 – The future site of Calgary becomes part of Canada and of the North-West Territories. 1873 – John Glenn was the first documented European settler in the Calgary area. 1875 – Originally named Fort Brisebois, after NWMP officer Éphrem-A. Brisebois, it was renamed Fort Calgary by Colonel James Macleod. 1877 – Treaty 7 is signed, and title to the Fort Calgary area is ceded to the Crown. 1882 - First sawmill on the Bow River. 1883 – The Canadian Pacific Railway reached the area and a rail station was constructed. 1884 – Calgary was officially incorporated as a town and elected its first mayor, George Murdoch. 1885 – Calgary Police Service established. 1886 – The Calgary Fire of 1886. 1886 - Mayor Murdoch versus magistrate Travis controversy 1888 – Anglican Diocese of Calgary established. 1891 – Calgary and Edmonton Railway opened, connecting Calgary to South Edmonton (Strathcona). 1894 – "The City of Calgary" incorporated, in what was then the North-West Territories. 1900 – Downtown East Village, Calgary established.

20th century

1910 Parkdale is annexed to the City of Calgary. The 103rd Calgary Rifles is created. 1912 – The Calgary Stampede is held for the first time. 1913 – City surpasses 50,000 residents 1915–18 – The Mewata Armouries are constructed. 1917 - Calgary became first city in Canada to use a form of proportional representation (single transferable voting) to elect its city councillors. Hannah Gale, Calgary's first female councillor, elected. STV in use until 1961, then again in 1971. During this time, the mayor and other single-person posts were filled using instant-runoff voting. 1919 The Victory Stampede was Calgary's second rodeo, honoring the end of the Great War. One Big Union is formed at Calgary. General strike takes place in Calgary. related to the longer Winnipeg general strike. The Calgary strike was a chapter of the Canadian Labour Revolt. 1920 - The 103rd Rifles is reorganized as The Calgary Regiment. 1921 - Calgary filled its two House of Commons seats with Labour Party candidates -William Irvine and Joseph Tweed Shaw. 1923 – The Calgary Stampede held for the third time and annually since then. 1924 - The Calgary Highlanders split from the Calgary Regiment to become its own regiment. 1926 - 1926 Alberta election. Calgary MLAs elected using single transferable voting in city-wide district. STV in use in Calgary until 1956. 1932 - Co-operative Commonwealth Federation party formed at meeting in Calgary. 1932–33 – The Glenmore Dam is constructed. 1945 - The current Calgary Stampeders of the Canadian Football League begin play. 1946 – City surpasses 100,000 residents 1947 – Stampede Wrestling established. 1948 - The Calgary Regiment renamed The King's Own Calgary Regiment 1955 - last provincial election where Calgary MLAs elected through STV. No CCF or NDP MLAs elected in Calgary under first-past-the-post voting until 1986.A Report on Alberta Elections 1967 – Construction of the Husky Tower started. Opened to the public on June 30, 1968. 1970 – First +15 enclosed pedestrian walkway constructed downtown. 1971 - last election where Calgary city councillors elected through single transferable voting, and mayor through instant-runoff voting 1978 – City surpasses 500,000 residents 1980 - The NHL's Calgary Flames begin play after relocating from Atlanta. 1981 – The CTrain began operation. 1984 – Suncor Energy Centre completed construction and becomes the new tallest building in Calgary. 1988 – Calgary hosts the 1988 Winter Olympics. 1989 Bankers Hall-East completed construction. The Flames win the Stanley Cup, the only time a visiting team has won the Stanley Cup in Montreal. 1992 – Stephen Avenue is designated as a National Historic Site of Canada. 1996 – Canadian Pacific Railway moves its head office from Montreal to Calgary. 1997 World Police and Fire Games Calgary Declaration 1999 – Hub Oil explosion 2000 – Bankers Hall-West is completed 11 years after its twin.

21st century 2002 – J26 G8 Protests 2007 – City surpasses 1,000,000 residents. 2010 – After 26 years, the Suncor Energy Centre is surpassed by The Bow as tallest building in Calgary. 2011 – Eighth Avenue Place I completed construction. 2013 – Widespread flooding across southern Alberta forces the evacuation of 75,000 Calgary residents. 2018 – Brookfield Place East is completed and becomes the new tallest building in Calgary. 2018 – The Calgary bid for the 2026 Winter Olympics is withdrawn after a failed city-wide plebiscite. 2020 – COVID-19 pandemic in Calgary.

List of riots and civil unrest in Calgary The following is a timeline of riots and civil unrest in Calgary, Alberta.Jamieson, S. "Some reflections on violence and the law in industrial relations," in Bercuson, D.J. and Knafla, L.A. (1979) Law and society in Canada in historical perspective. University of Calgary. See pp. 141, 145 and 150 for multiple analyses of the riots and civil unrest in Calgary. Since its incorporation as a town in 1884, like other cities, Calgary has had to deal with a variety of violence. Calgary has been credited with maintaining relative civility during duress.Torrance, J.M.C. (1986) Public Violence in Canada, 1867-1982. McGill-Queen's Press - MQUP. p 135. The Great Depression in Canada has received particular attention from sociologists and historians, including Thomas Thorner and Neil Watson who wrote, "There is little question that Calgary experienced its share of civil strife during the Depression. Battles between police and the single unemployed men, full scale riots and threats to blow up public buildings appear to have been almost annual events."Thorner, T. and Watson, N. (1981) "Patterns of Prairie Crime: Calgary, 1875-1939," in Crime and Criminal Justice in Europe and Canada. Knafla, L.A. (ed.) Waterloo, Ontario: Wilfried Laurier University Press, p. 231. According to Stephen Graham, a professor of Human Geography at Durham University, recent events have seen the City of Calgary change their tactics towards civil unrest activities such as protests.Graham, S. (2004) Cities, War, and Terrorism: Towards an Urban Geopolitics. Blackwell Publishing. p 223.

Events