| Year | Name | City | Country | Guests of honor | Size[1] |
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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) [3] |
66th | 2008 | Denvention 3 | Denver, Colorado | US | Lois McMaster Bujold (pro) Tom Whitmore (fan) Rick Sternbach (artist) | 3,752 (4,854) [4] |
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) John Scalzi (toastmaster) | 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) Paul Cornell (toastmaster) 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[5] | Helsinki | Finland | John-Henri Holmberg Nalo Hopkinson Johanna Sinisalo Claire Wendling Walter Jon Williams | 5,944 (8,748) [6] |
76th | 2018 | Worldcon 76 in San Jose[7] | San Jose, California | US | Spider Robinson Chelsea Quinn Yarbro Pierre Pettinger Sandy Pettinger Edgar Pangborn | 5,440 (7,812) [8] |
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 | 2,359 in-person 1,197 virtual (8,721) |
80th | 2022 | Chicon 8 | Chicago, Illinois | US | Tananarive Due Steven Barnes Edie Stern and Joe Siclari Erle Korshak Annalee Newitz and Charlie Jane Anders
Charles de Lint
Floyd Norman | 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 [9] |
82nd | 2024 | Glasgow 2024 | Glasgow, Scotland | UK | Chris Baker Claire Brialey Mark Plummer Ken MacLeod Nnedi Okorafor Terri Windling | TBD |
83th | 2025 | Seattle Worldcon 2025 | Seattle, Washington | US | Martha Wells Donato Giancola Bridget Landry Alexander James Adams | TBD |
84th | 2026 | LAcon V | Anaheim, California | US | Barbara Hambly Ronald D. Moore Colleen Doran Anita Sengupta Tim Kirk Geri Sullivan Stan Sakai Ursula Vernon | TBD |