| Year | Name | City | Country | Guests of honor | Size |
|---|
| 1st | 1939 | Nycon I | New York, New York | US | Frank R. Paul | 200 |
| 2nd | 1940 | Chicon I | Chicago, Illinois | US | E. E. "Doc" Smith | 128 |
| 3rd | 1941 | Denvention I | Denver, Colorado | US | Robert A. Heinlein | 90 |
| 4th | 1946 | Pacificon I | Los Angeles, California | US | A. E. van Vogt
E. Mayne Hull | 130 |
| 5th | 1947 | Philcon I | Philadelphia, Pennsylvania | US | John W. Campbell, Jr. | 200 |
| 6th | 1948 | Torcon I | Toronto, Ontario | Canada | Robert Bloch (pro)
Bob Tucker (fan) | 200 |
| 7th | 1949 | Cinvention | Cincinnati, Ohio | US | Lloyd A. Eshbach (pro)
Ted Carnell (fan) | 190 |
| 8th | 1950 | Norwescon | Portland, Oregon | US | Anthony Boucher | 400 |
| 9th | 1951 | Nolacon I | New Orleans, Louisiana | US | Fritz Leiber | 190 |
| 10th | 1952 | TASFiC (Chicon II) | Chicago, Illinois | US | Hugo Gernsback | 870
(1,175) |
| 11th | 1953 | Philcon II | Philadelphia, Pennsylvania | US | Willy Ley | 839 |
| 12th | 1954 | SFCon | San Francisco, California | US | John W. Campbell, Jr. | 700 |
| 13th | 1955 | Clevention | Cleveland, Ohio | US | Isaac Asimov (pro)
Sam Moskowitz (mystery GoH) | 380 |
| 14th | 1956 | NyCon II | New York, New York | US | Arthur C. Clarke | 850 |
| 15th | 1957 | Loncon I | London | UK | John W. Campbell, Jr. | 268 |
| 16th | 1958 | Solacon | South Gate, California | US | Richard Matheson | 322
(601) |
| 17th | 1959 | Detention | Detroit, Michigan | US | Poul Anderson (pro)
John Berry (fan) | 371 |
| 18th | 1960 | Pittcon | Pittsburgh, Pennsylvania | US | James Blish | 568 |
| 19th | 1961 | Seacon | Seattle, Washington | US | Robert A. Heinlein | 300 |
| 20th | 1962 | Chicon III | Chicago, Illinois | US | Theodore Sturgeon | 730
(830) |
| 21st | 1963 | Discon I | Washington, D.C. | US | Murray Leinster | 600 |
| 22nd | 1964 | Pacificon II | Oakland, California | US | Leigh Brackett (pro)
Edmond Hamilton (pro)
Forrest J Ackerman (fan) | 523 |
| 23rd | 1965 | Loncon II | London | UK | Brian W. Aldiss | 350 |
| 24th | 1966 | Tricon | Cleveland, Ohio | US | L. Sprague de Camp | 850 |
| 25th | 1967 | Nycon 3 | New York, New York | US | Lester del Rey (pro)
Bob Tucker (fan) | 1,500 |
| 26th | 1968 | Baycon | Berkeley, California | US | Philip José Farmer (pro)
Walter J. Daugherty (fan) | 1,430
(1,841) |
| 27th | 1969 | St. Louiscon | St. Louis, Missouri | US | Jack Gaughan (pro)
Eddie Jones (fan) | 1,534 |
| 28th | 1970 | Heicon '70 | Heidelberg | West Germany | E. C. Tubb (UK)
Robert Silverberg (US)
Herbert W. Franke (Germany)
Elliot K. Shorter (fan) | 620 |
| 29th | 1971 | Noreascon I | Boston, Massachusetts | US | Clifford D. Simak (pro)
Harry Warner, Jr. (fan) | 1,600
(2,078) |
| 30th | 1972 | L.A.con I | Los Angeles, California | US | Frederik Pohl (pro)
Buck & Juanita Coulson (fan) | 2,007 |
| 31st | 1973 | Torcon II | Toronto, Ontario | Canada | Robert Bloch (pro)
William Rotsler (fan) | 2,900 |
| 32nd | 1974 | Discon II | Washington, D.C. | US | Roger Zelazny (pro)
Jay Kay Klein (fan) | 3,587 |
| 33rd | 1975 | Aussiecon 1 | Melbourne, Victoria | Australia | Ursula K. Le Guin (pro)
Susan Wood (fan)
Mike Glicksohn (fan)
Donald Tuck (Australian) | 606 |
| 34th | 1976 | MidAmeriCon | Kansas City, Missouri | US | Robert A. Heinlein
George Barr (fan) | 3,014
(4,200) |
| 35th | 1977 | SunCon | Miami Beach, Florida | US | Jack Williamson (pro)
Robert A. Madle (fan) | 3,240 |
| 36th | 1978 | IguanaCon II | Phoenix, Arizona | US | Harlan Ellison (pro)
Bill Bowers (fan) | 4,700 |
| 37th | 1979 | Seacon '79 | Brighton | UK | Brian Aldiss (UK)
Fritz Leiber (US)
Harry Bell (fan) | 3,114 |
| 38th | 1980 | Noreascon Two | Boston, Massachusetts | US | Damon Knight (pro)
Kate Wilhelm (pro)
Bruce Pelz (fan) | 5,850 |
| 39th | 1981 | Denvention Two | Denver, Colorado | US | Clifford D. Simak (pro)
C.L. Moore (pro)
Rusty Hevelin (fan) | 3,725
(4,542) |
| 40th | 1982 | Chicon IV | Chicago, Illinois | US | A. Bertram Chandler (pro)
Frank Kelly Freas (pro)
Lee Hoffman (fan) | 4,275 |
| 41st | 1983 | ConStellation | Baltimore, Maryland | US | John Brunner (pro)
David A. Kyle (fan) | 6,400 |
| 42nd | 1984 | L.A.con II | Anaheim, California | US | Gordon R. Dickson (pro)
Dick Eney (fan) | 8,365
(9,282) |
| 43rd | 1985 | Aussiecon Two | Melbourne, Victoria | Australia | Gene Wolfe (pro)
Ted White (fan) | 1,599 |
| 44th | 1986 | ConFederation | Atlanta, Georgia | US | Ray Bradbury (pro) [2]
Terry Carr (fan) | 5,811 |
| 45th | 1987 | Conspiracy '87 | Brighton | UK | Doris Lessing (UK)
Alfred Bester (US)
Boris and Arkady Strugatsky (USSR)
Jim Burns (artist)
Ray Harryhausen (film)
Joyce Slater and Ken Slater (fan)
David Langford (special fan) | 4,009
(5,425) |
| 46th | 1988 | Nolacon II | New Orleans, Louisiana | US | Donald A. Wollheim (pro)
Roger Sims (fan) | 5,300 |
| 47th | 1989 | Noreascon 3 | Boston, Massachusetts | US | Andre Norton (pro)
Betty and Ian Ballantine (pro)
The Stranger Club (fan) | 6,837
(7,795) |
| 48th | 1990 | ConFiction | The Hague | Netherlands | Harry Harrison (pro)
Wolfgang Jeschke (pro)
Joe Haldeman (pro)
Andrew I. Porter (fan) | 3,580 |
| 49th | 1991 | Chicon V | Chicago, Illinois | US | Hal Clement (pro)
Martin H. Greenberg (pro)
Richard Powers (pro)
Jon and Joni Stopa (fan) | 5,661 |
| 50th | 1992 | MagiCon | Orlando, Florida | US | Jack Vance (pro)
Vincent Di Fate (artist)
Walter A. Willis (fan) | 5,319
(6,368) |
| 51st | 1993 | ConFrancisco | San Francisco, California | US | Larry Niven
Alicia Austin
Tom Digby (fan)
Jan Howard Finder
Mark Twain (Dead GoH) | 6,602
(7,725) |
| 52nd | 1994 | ConAdian | Winnipeg, Manitoba | Canada | Anne McCaffrey (pro)
George Barr (artist)
Robert Runte (fan) | 3,570 |
| 53rd | 1995 | Intersection | Glasgow, Scotland | UK | Samuel R. Delany (writer)
Gerry Anderson (media)
Les Edwards (artist)
Vin¢ Clarke (fan) | 4,173
(6,524) |
| 54th | 1996 | L.A.con III | Anaheim, California | US | James White (writer)
Roger Corman (media)
Elsie Wollheim (special)
Takumi and Sachiko Shibano (fan) | 6,703 |
| 55th | 1997 | LoneStarCon 2 | San Antonio, Texas | US | Algis Budrys (pro)
Michael Moorcock (pro)
Don Maitz (artist)
Roy Tackett (fan) | 4,634
(5,614) |
| 56th | 1998 | BucConeer | Baltimore, Maryland | US | C. J. Cherryh
Milton A. Rothman
Stanley Schmidt
Michael Whelan
J. Michael Straczynski (special) | 6,572 |
| 57th | 1999 | Aussiecon Three | Melbourne, Victoria | Australia | Gregory Benford, author
George Turner, author
Bruce Gillespie, fan | 1,548
(2,872) |
| 58th | 2000 | Chicon 2000 | Chicago, Illinois | US | Ben Bova (author)
Bob Eggleton (artist)
Jim Baen (editor)
Bob & Anne Passovoy (fan) | 5,794
(6,574) |
| 59th | 2001 | Millennium Philcon | Philadelphia, Pennsylvania | US | Greg Bear (author)
Stephen Youll (artist)
Gardner Dozois (editor)
George H. Scithers (fan) | 4,840
(6,269) |
| 60th | 2002 | ConJosé | San Jose, California | US | Vernor Vinge (author)
David Cherry (artist)
Bjo & John Trimble (fan)
Ferdinand Feghoot (imaginary) | 5,162
(5,916) |
| 61st | 2003 | Torcon 3 | Toronto, Ontario | Canada | George R. R. Martin (author)
Frank Kelly Freas (artist)
Mike Glyer (fan)
Robert Bloch (GoHst of Honor) | 3,834
(4,986) |
| 62nd | 2004 | Noreascon 4 | Boston, Massachusetts | US | Terry Pratchett (pro)
William Tenn (pro)
Jack Speer (fan)
Peter Weston (fan) | 6,008
(7,485) |
| 63rd | 2005 | Interaction | Glasgow, Scotland | UK | Greg Pickersgill
Christopher Priest
Robert Sheckley
Lars-Olov Strandberg
Jane Yolen | 4,115
(5,202) |
| 64th | 2006 | L.A.con IV | Anaheim, California | US | Connie Willis (Author)
James Gurney (Artist)
Howard DeVore (fan)
Frankie Thomas (Special) | 5,738
(6,291) |
| 65th | 2007 | Nippon 2007 | Yokohama | Japan | Sakyo Komatsu (author)
David Brin (author)
Takumi Shibano (fan)
Yoshitaka Amano (artist)
Michael Whelan (artist) | 3,348
(5,149)
|
| 66th | 2008 | Denvention 3 | Denver, Colorado | US | Lois McMaster Bujold (pro)
Tom Whitmore (fan)
Rick Sternbach (artist) | 3,752
(4,854)
|
| 67th | 2009 | Anticipation | Montréal, Québec | Canada | Neil Gaiman (pro)
Elisabeth Vonarburg (pro)
Taral Wayne (fan)
David Hartwell (editor)
Tom Doherty (publisher) | 3,925
(4,499) |
| 68th | 2010 | Aussiecon Four | Melbourne, Victoria | Australia | Kim Stanley Robinson (author)
Robin Johnson (fan)
Shaun Tan (artist) | 2,101
(3,462) |
| 69th | 2011 | Renovation | Reno, Nevada | US | Tim Powers
Ellen Asher
Boris Vallejo
Charles N. Brown (in memoriam) | 4,112
(5,526) |
| 70th | 2012 | Chicon 7 | Chicago, Illinois | US | Mike Resnick (author)
Rowena Morrill (artist)
Story Musgrave (astronaut)
Peggy Rae Sapienza (fan)
Jane Frank (agent)
Sy Liebergot (special guest) | 4,743
(6,197) |
| 71st | 2013 | LoneStarCon 3 | San Antonio, Texas | US | Ellen Datlow
James Gunn
Willie Siros
Norman Spinrad
Darrell K. Sweet (in memoriam)
Leslie Fish
Joe R. Lansdale | 4,832
(6,130) |
| 72nd | 2014 | Loncon 3 | London | UK | Iain M. Banks (in memoriam)
John Clute
Chris Foss
Malcolm Edwards
Jeanne Gomoll
Robin Hobb
Bryan Talbot | 6,946
(10,718) |
| 73rd | 2015 | Sasquan | Spokane, Washington | US | Brad Foster
David Gerrold
Vonda McIntyre
Tom Smith
Leslie Turek | 5,077
(11,742) |
| 74th | 2016 | MidAmeriCon II | Kansas City, Missouri | US | Kinuko Y. Craft
Patrick Nielsen Hayden
Teresa Nielsen Hayden
Tamora Pierce
Michael Swanwick | 4,719
(7,740) |
| 75th | 2017 | Worldcon 75 | Helsinki | Finland | John-Henri Holmberg
Nalo Hopkinson
Johanna Sinisalo
Claire Wendling
Walter Jon Williams | 5,944
(8,748)
[3] |
| 76th | 2018 | Worldcon 76 in San Jose | San Jose, California | US | Spider Robinson
Chelsea Quinn Yarbro
John Picacio
Pierre and Sandy Pettinger
Frank Hayes
Edgar Pangborn
Bob Wilkins | 5,440
(7,812)
[4] |
| 77th | 2019 | Dublin 2019 - An Irish Worldcon | Dublin | Ireland | Diane Duane
Ginjer Buchanan
Jocelyn Bell Burnell
Ian McDonald
Steve Jackson
Bill and Mary Burns | 6,525
(8,430) |
| 78th | 2020 | CoNZealand | Wellington | New Zealand | Mercedes Lackey
Larry Dixon
Greg Broadmore
Rose Mitchell | 0 in-person
1,847 virtually
(4,624) |
| 79th | 2021 | DisCon III | Washington, D.C. | US | John Harris
Nancy Kress
Malka Older
Sheree Renée Thomas
Ben Yalow | 2,764 in-person
778 virtual
(6,416)
[5] |
| 80th | 2022 | Chicon 8 | Chicago, Illinois | US | Tananarive Due
Steven Barnes
Edie Stern and Joe Siclari
Erle Korshak | 3,574 in-person
1,150 virtual
(6,500) |
| 81st | 2023 | 2023 Chengdu | Chengdu, Sichuan | China | Cixin Liu
Sergey Lukianenko
Robert J. Sawyer | 18,895 in-person
>1,105 virtual
(>20,000)
[6] |
| 82nd | 2024 | Glasgow 2024 | Glasgow, Scotland | UK | Chris Baker
Claire Brialey
Mark Plummer
Ken MacLeod
Nnedi Okorafor
Terri Windling | 7,300 in-person
600 virtual
(10,000)
[7] |
| 83th | 2025 | Seattle Worldcon 2025 | Seattle, Washington | US | Martha Wells
Donato Giancola
Bridget Landry
Alexander James Adams | 5,594 in-person
663 virtual
(7,739)
[8] |
| 84th | 2026 | LAcon V | Anaheim, California | US | Barbara Hambly
Ronald D. Moore
Colleen Doran
Anita Sengupta
Tim Kirk
Geri Sullivan
Stan Sakai | TBD |
| 85th | 2027 | TBD | TBD | TBD | TBD | TBD |