Worldcon, officially the World Science Fiction Convention, the annual convention of the World Science Fiction Society (WSFS), is a science fiction convention. It has been held each year since 1939. The members of each Worldcon are the members of WSFS, and vote both to select the site of the Worldcon two years later, and to select the winners of the annual Hugo Awards, which are presented at each convention.
The 63rd World Science Fiction Convention (Worldcon), also known as Interaction, was held on 4–8 August 2005 at the SEC Centre with the attached SEC Armadillo and Moat House Hotel in Glasgow, United Kingdom. Parties took place at the Hilton Hotel.
The 58th World Science Fiction Convention (Worldcon), also known as Chicon 2000, was held on 31 August–4 September 2000 at the Hyatt Regency Chicago, Sofitel Hotel and Fairmont Hotel in Chicago, Illinois, United States.
The 19th World Science Fiction Convention (Worldcon), also known as Seacon, was held on 2–4 September 1961 at the Hyatt House Hotel in Seattle, Washington, United States.
The 61st World Science Fiction Convention (Worldcon), also known as Torcon 3, was held from 28 August to 1 September 2003 at the Metro Toronto Convention Centre and at the Fairmont Royal York and Crowne Plaza hotels in Toronto, Ontario, Canada.
The 66th World Science Fiction Convention (Worldcon), also known as Denvention 3, was held on 6–10 August 2008 at the Colorado Convention Center and the Sheraton Denver Downtown Hotel in Denver, Colorado, United States.
The 60th World Science Fiction Convention (Worldcon), also known as ConJose, was held on 29 August–2 September 2002 at the McEnery Convention Center, the Fairmont San Jose, and the Hilton San Jose & Towers in San Jose, California, United States.
The 57th World Science Fiction Convention (Worldcon), also known as Aussiecon Three, was held on 2–6 September 1999 at the Melbourne Convention and Exhibition Centre in Melbourne, Australia.
The 70th World Science Fiction Convention (Worldcon), also known as Chicon 7, was held on 30 August–3 September 2012 at the Hyatt Regency Chicago in Chicago, Illinois, United States.
The 13th World Science Fiction Convention (Worldcon), also known as Clevention, was held on 2–5 September 1955 at the Manger Hotel in Cleveland, Ohio, United States.
The 14th World Science Fiction Convention (Worldcon), also known as NyCon II or NEWYORCON, was held on 31 August–3 September 1956 at the Biltmore Hotel in New York City, United States.
The 72nd World Science Fiction Convention (Worldcon), also known as Loncon 3, was held on 14–18 August 2014 at the ExCeL London in London, United Kingdom.
The 74th World Science Fiction Convention (Worldcon), also known as MidAmeriCon II, was held on 17–21 August 2016 at the Bartle Hall Convention Center in Kansas City, Missouri, United States. The convention's name, by established Worldcon tradition, follows after the first MidAmeriCon, the 34th World Science Fiction Convention, held in Kansas City in 1976.
The 75th World Science Fiction Convention (Worldcon), also known as Worldcon 75, was held on 9–13 August 2017 at the Helsinki Exhibition and Convention Centre in Helsinki, Finland.
The 77th World Science Fiction Convention (Worldcon), also known as Dublin 2019—An Irish Worldcon, was held on 15–19 August 2019 at the Convention Centre, as well as in The Point Square, Dublin, Ireland.
The 78th World Science Fiction Convention (Worldcon), also known as CoNZealand, was held from 29 July to 2 August 2020. It was planned to be held at the TSB Arena and Shed 6, Intercontinental Hotel, Michael Fowler Center, in Wellington, New Zealand. However, due to the COVID-19 pandemic, the organizers announced in March 2020 that it would be held as a virtual convention, with no on-site attendance.
The 79th World Science Fiction Convention (Worldcon), also known as DisCon III, was held on 15–19 December 2021 in Washington, D.C., United States.
The 80th World Science Fiction Convention (Worldcon), also known as Chicon 8, was held on 1–5 September 2022 in Chicago, Illinois, United States.
The 82nd World Science Fiction Convention (Worldcon), also known as Glasgow 2024, was held in 2024 in Glasgow, Scotland, United Kingdom.
The 83rd World Science Fiction Convention (Worldcon), also known as Seattle Worldcon 2025, will be held in August 13–17, 2025 in Seattle, Washington. The convention will be chaired by Kathy Bond.
