Onesie Conventions
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There have been a lot of one-off conventions: Some intentionally so; others not so much. We collect them here.
We do not include conventions which are part of a series such as Worldcon, Eastercon, Eurocon, etc., regardless of whether they have similar names or not. Nor do we include conventions which were intended as one-shots but later came to be seen as an instance of a continuing convention. (E.g., Smofcon 0 or Midwestcon 0.)
See also Early Conventions for a list of conventions (mostly one-shots) held before the end of 1946.
| Convention | Date | Location | |
|---|---|---|---|
| Centracon | Chicago, IL | ||
| NECON | October 14, 1951 | Bradford, UK | |
| Buffalocon | May 2-4, 1952 | Buffalo, NY | |
| Wiscon | September 20, 1953 | Fond Du Lac, WI? | |
| X-Con | April 10, 1954 | San Francisco | |
| Canberra Science Fiction Conference | March 30-April 1, 1956 | Canberra, Australia | |
| IllWisCon | July 4-6, 1958 | Chicago | |
| 1969 Conference on Middle Earth | April 25-26, 1969 | Urbana, IL | |
| A2 Relax Icon | February 1972 | Ann Arbor, MI | |
| BYO-Con | 26-28 December 1972 | Melbourne, Australia | |
| Cal Tech Conference | March 8-9, 1974 | Pasadena, CA | |
| Blackpool Fan Con | February 6-8, 1976 | Blackpool, UK | |
| Alpha Draconis | October 29-31 1976 | Toronto, ON | |
| Yuccacon | April 15-17, 1977 | Colorado State U. | |
| Un-Con | September 9, 1978 | Winnipeg, MB | |
| UnreelCon | October 27-29, 1978 | Toronto | |
| Whatacon | February 24, 1979 | San Diego, CA | |
| A Mid-Winter Convention | January 23-25, 1981 | Long Beach, CA | |
| Cinecon | April 17-21, 1981 | Melbourne, Australia | |
| Tolkon | August 21-24, 1981 | Sydney, Australia | |
| Triciticon '81 | September 18-20, 1981 | Vestal, NY | |
| [[ZerCon | November, 1981 | Huntsville, AL | |
| Augacon | November 27-29, 1981 | San Mateo, CA | |
| Valcon | June 10-12, 1983 | Valpariso, IN | |
| Brave New Con | January 13-15, 1984 | Reston, VA | |
| Wamcon | February 15-17, 1984 | ||
| Alti-Ego's | April 26-28, 1985 | Denver, CO | |
| Triangulum | August 30-September 1, 1985 | Milwaukee, WI | |
| XIIcon | September 26-29, 1986 | Glasgow, Scotland | |
| 4E 2B 70 November 21, 1986 | Los Angeles, CA | ||
| Victoricon | 1991 | Melbourne, Australia | |
| Twentycon | July, 1991 | Birmingham, UK | |
| Altercon 666 | November 8-10, 1991 | London | |
| Boise Fantasy Arts Convention | April 24-25, 1993 | Boise, ID | |
| Cascadecon '94 | August 26-28, 1994 | Portland, OR | |
| Chococon | September 2-4 1994 | Harrisburg, PA | |
| Attitude: The Convention | February 14-17, 1996 | Malvern, UK | |
| Aliens Stole My Handbag | June 30-July 2, 2000 | Shepperton, UK | |
| Tolcon | May 13-15, 2005 | Seattle, WA | |
| Wellscon | November 25, 2005 | Adelaide, Australia | |
| ValhallaCon | September 4-6, 2009 | Bellingham, WA | |
| Canberra Science Fiction Convention | May 5-6, 2011 | Canberra, Australia | |
| VillainCon | October 1-2, 2011 | Perth, Australia | |
| Andromeda One | September 21, 2013 | Birmingham, UK | |
| Archipelacon | June 25–28, 2015 | Åland, Finland | |
| Asimov Centennial Meetup | January 4th 2020 | NY, NY |
