53 Worldcon

The Astounding Award for Best New Writer is given annually to the best new writer whose first professional work of science fiction or fantasy was published within the two previous calendar years. It is named after Astounding Science Fiction, a foundational science fiction magazine. The award is sponsored by Dell Magazines, which publishes Analog.

The 9th World Science Fiction Convention, also known as Nolacon I, was held 1–3 September 1951 at the St. Charles Hotel in New Orleans, Louisiana, United States. The chairman was Harry B. Moore. The guest of honor was Fritz Leiber. Total attendance was approximately 190. The at-the-door membership price was US$1, the same price charged from the 1st through the 12th Worldcon

The 10th World Science Fiction Convention was held on Labor Day weekend from August 30 to September 1, 1952, at the Morrison Hotel in Chicago, Illinois. This Worldcon never chose an official name other than the title "10th World Science Fiction Convention," as both the convention's issued membership card and program book clearly stated. Only the first Worldcon in New York City (1939) and the 11th in Philadelphia, 1953, shared this lack of a formal convention name. The phrases "Tenth Anniversary World Science Fiction Convention" (TAWSFiC) and "Tenth Anniversary Science Fiction Convention" were each used in some of this Worldcon's pre-convention materials; the phrase's acronyms "TAWSFiC" and "TASFiC" were never officially used in print or otherwise by the Chicago committee at that time. However, the 10th Worldcon was frequently referred to by its members by the unofficial name Chicon II, so dubbed after the previous Chicago Worldcon (Chicon) in 1940; this name proved so popular that the convention became known as Chicon II in science fiction fandom's lore and written histories.

The 11th World Science Fiction Convention, also known as Philcon II, was held in September 1953 at the Bellevue-Stratford Hotel in Philadelphia, Pennsylvania, USA. It was the first Worldcon to present the Hugo Awards. The supporting organization was the Philadelphia Science Fiction Society. The guest of honor was Willy Ley. The chairman was Milton A. Rothman, replacing the late James A. Williams. Isaac Asimov was toastmaster.

The 14th World Science Fiction Convention, also known as NyCon II or NEWYORCON, was held August 31–September 3, 1956, at the Biltmore Hotel in New York, New York, United States.

The 22nd World Science Fiction Convention, also known as Pacificon II, was held September 4–7, 1964, at the Hotel Leamington in Oakland, California, United States.

The 23rd World Science Fiction Convention, also known as Loncon II, was held 27–30 August 1965 at the Mount Royal Hotel in London, United Kingdom. It was the second Worldcon to be held in London, following the original Loncon in 1957.

The 48th World Science Fiction Convention (Worldcon), was ConFiction, which was held in The Hague, Netherlands 23rd-27 August 1990 at the Netherlands Congress Centre. This convention was one of the three Worldcons held in continental Europe, the others being the 28th World Science Fiction Convention held in West Germany and the 75th World Science Fiction Convention held in Finland.

The 55th World Science Fiction Convention (Worldcon), was LoneStarCon 2, also known as "The Second Occasional LoneStarCon Science Fiction Convention & Chili Cook-off". The convention was held August 28–September 1, 1997, at the Marriott Rivercenter, Marriott Riverwalk, and the Henry B. Gonzalez Convention Center in San Antonio, Texas, United States. The first LoneStarCon, held in Austin, Texas, had been the North American Science Fiction Convention (NASFiC) in 1985, when the 43rd Worldcon was held in Australia.

BucConeer was the 56th World Science Fiction Convention, held in Baltimore, Maryland, United States, on August 5–9, 1998. The convention was held in the Baltimore Convention Center, as well as the Baltimore Marriott Inner Harbor, the Holiday Inn Inner Harbor, the Omni Inner Harbor Baltimore, and the Baltimore Hilton and Towers. The convention was chaired by Peggy Rae Pavlat.

The 58th World Science Fiction Convention (Worldcon) was Chicon 2000, which was held in Chicago, United States from August 31 through September 4, 2000. The venues for 58th Worldcon were Hyatt Regency Chicago, Sofitel Hotel and Fairmont Hotel. The organizing committee was chaired by Tom Veal.

The Millennium Philcon was the 59th World Science Fiction Convention, held from August 30 to September 3, 2001 at the Pennsylvania Convention Center & Philadelphia Marriott Hotel in Philadelphia, Pennsylvania, USA.

ConJose was the 60th World Science Fiction Convention, held in San Jose, California on August 29-September 2, 2002. The convention was held in the McEnery Convention Center, as well as the Fairmont San Jose and the Hilton San Jose & Towers. ConJose was co-chaired by Tom Whitmore and Kevin Standlee and organized under the auspices of San Francisco Science Fiction Conventions.

Torcon 3 was the 61st World Science Fiction Convention, held in Toronto, Ontario, Canada on August 28-September 1, 2003. The convention was held in the Metro Toronto Convention Centre, as well as the Fairmont Royal York and Crowne Plaza hotels. Torcon 3 was also the site of the 2003 Canvention.

The 62nd World Science Fiction Convention (Worldcon) was Noreascon 4, which was held in Boston, Massachusetts, from September 2–6, 2004. The venues for the 62nd Worldcon were Hynes Convention Center, Sheraton Boston Hotel and Boston Marriott Copley Place. The convention was organized by Massachusetts Convention Fandom, Inc., and the organizing committee was chaired by Deb Geisler.

The 63rd World Science Fiction Convention (Worldcon) was called Interaction, and was held in Glasgow, Scotland 4–8 August 2005. The event was also the Eurocon. The Venue for the 63rd Worldcon was the Scottish Exhibition and Conference Centre (SECC) with the attached Clyde Auditorium and Moat House Hotel. Parties took place at the Hilton Hotel.

The 64th World Science Fiction Convention (Worldcon), styled L.A.con IV, was held in Anaheim, California, United States, from August 23–27, 2006. The venue for the 64th Worldcon was the Anaheim Convention Center and the nearby Hilton and Marriott hotels. The organizing committee was chaired by Christian B. McGuire.

The 67th World Science Fiction Convention (Worldcon), also known as Anticipation, was hosted in Montréal, Québec, Canada, on 6–10 August 2009, at the Palais des congrès de Montréal. The organising committee was co-chaired by René Walling and Robbie Bourget.

The 68th World Science Fiction Convention (Worldcon), Aussiecon Four, was held 2–6 September 2010, in the Melbourne Convention and Exhibition Centre in Melbourne, Victoria, Australia, the location selected by the members of Denvention 3.

The 69th World Science Fiction Convention (Worldcon), also known as Renovation, was held in Reno, Nevada, August 17–21, 2011, at the Reno-Sparks Convention Center (RSCC). The Atlantis Casino Resort served as the headquarters/party hotel, with additional rooms supplied by the Peppermill Reno and Courtyard by Marriott. The convention committee was chaired by Patty Wells.

The 70th World Science Fiction Convention (Worldcon), also known as Chicon 7, was held in Chicago, Illinois, August 30-September 3, 2012, at the Hyatt Regency Chicago. The convention committee was chaired by Dave McCarty and organized under the auspices of the Chicago Worldcon Bid corporation.

The 71st World Science Fiction Convention (Worldcon), also known as LoneStarCon 3, was held in San Antonio, Texas, on August 29-September 2, 2013, at the Henry B. Gonzalez Convention Center and Marriott Rivercenter. The convention committee was chaired by Randall Shepherd. The convention was organized by Alamo Literary Arts Maintenance Organization, Inc. (ALAMO) which had previously organized LoneStarCon 2, the 55th World Science Fiction Convention, held in San Antonio in 1997.

The 72nd World Science Fiction Convention (Worldcon), also known as Loncon 3, was held 14–18 August 2014 at ExCeL London in London, England. The convention committee was co-chaired by Alice Lawson and Steve Cooper and organized as London 2014 Limited. Loncon 3 sold the most memberships (10,833) and had the second largest in-person attendance (7,951) of any Worldcon to date.

The 73rd World Science Fiction Convention (Worldcon), also known as Sasquan, was held on August 19–23, 2015, at the Spokane Convention Center in Spokane, Washington. This location was selected on August 31, 2013, by the members of the 71st World Science Fiction Convention in San Antonio, Texas. The convention was chaired by Sally Woehrle.

The 74th World Science Fiction Convention (Worldcon), also known as MidAmeriCon II, was held August 17–21, 2016, at the Bartle Hall Convention Center in downtown, Kansas City, Missouri. Its location was selected on August 17, 2014 by the members of the 72nd World Science Fiction Convention in London.

The 75th World Science Fiction Convention (Worldcon), also known as Worldcon 75, was held 9–13 August 2017 at the Helsinki Exhibition and Convention Centre in Helsinki, Finland. This location was selected in August 2015 by the members of the 73rd World Science Fiction Convention in Spokane, Washington.

The 77th World Science Fiction Convention (Worldcon), also known as Dublin 2019—An Irish Worldcon, was held in the Convention Centre, as well as in The Point Square, Dublin, Ireland from August 15 to 19, 2019. A number of fringe events also took place around the city.