Marcon

A Regional convention held in Columbus Ohio from 1966 and sponsored by the Olentangy SF Society. Marcon allegedly stands for "Multiple Alternative Realities Convention," but actually was chosen to reflect the month, March, in which it was held.

Convention	Dates	Guests
Marcon I	March 1966	none
Marcon II	April 8-9, 1967	Roger Zelazny
Marcon III	March 30-31, 1968	Fred Pohl
Marcon IV	March 28-30, 1969	Terry Carr
Marcon V	1970	Gordon R. Dickson
Marcon VI	March 26-28, 1971	Lester del Rey
Marcon VII	1972	Roger Zelazny
Marcon VIII	1973	Anne McCaffrey
Marcon IX	March 29-31, 1974	Hal Clement
Marcon X	March 21-23, 1975	James Gunn
Marcon XI	March 19-21, 1976	Joe Haldeman, Randy Bathurst
Marcon XII	March 18-20, 1977	Howard DeVore
Marcon XIII	April 14-16, 1978	A. Bertram Chandler, Larry Smith, Bob Hillis
Marcon XIV	March 16-18, 1979	Katherine Kurtz, Fred Haskell
Marcon XV	May 2-4, 1980	L. Sprague de Camp, Brian Earl Brown
Marcon XVI	March 13-15, 1981	Andy Offutt, Bob Passavoy, Anne Passavoy
Marcon XVII	April 30-May 2, 1982	Hal Clement, Buck Coulson
Marcon XVIII	May 13-15, 1983	James Hogan, George Laskowski
Marcon XIX	May 18-20, 1984	C. J. Cherryh, Todd Cameron Hamilton
Marcon XX	May 10-12, 1985	Larry Niven, Carl Lundgren, Bill Maraschiello
Marcon XXI	May 1986	Roger Zelazny, Kelly Freas, Andrew J. Offutt, Bill Maraschiello
Marcon XXII	May 1987	Michael Kube-McDowell
Marcon XXIII	April 1988	David Brin, Michael Whelan, Bill Sutton, Kevin Siembieda
Marcon XXIV	1989	Hal Clement, Todd Cameron Hamilton, Barry Childs-Helton, Sally Childs-Helton, Steve Jackson
Marcon XXV	1990	George R. R. Martin, Melinda Snodgrass, Gahan Wilson, Murray Porath, Chris Claremont
Marcon 26	1991	C. J. Cherryh, Juanita Coulson, Lois McMaster Bujold, Rowena Morrill, Michael Longcor, Richard Spelman
Marcon 27	1992	Steve Francis, Sue Francis
Marcon 28	April 23-25, 1993	Mike Resnick, Jane Yolen, Animal X, Lois McMaster Bujold
Marcon 29	May 13-15, 1994	Boris Vallejo, Barbara Hambly, Philip José Farmer, Julius Schwartz, Dr. Jane, While Wolf Games
Marcon 30	1995	Kathy Mar, J. Michael Straczynski
Marcon 31	1996	Joey Shoji
Marcon 32	May 9-11 1997	Harry Turtledove, Juanita Coulson
Marcon 33	1998	Ookla the Mok
Marcon 34	1999	Syntax
Marcon 35	2000	Steve MacDonald
Marcon 36	25–27 2001	Bob Passavoy, Ann Passavoy, Karen Anderson
Marcon 37	May 24–26, 2002	Catherine Asaro, Zander Nyrond
Marcon 38	23–25, 2003	J. Gregory Keyes, Richard Biggs, Eugene Roddenberry, Jr., Kenny Baker, Bill and Brenda Sutton, Judith and Dave Hayman
Marcon 39	May 28–30, 2004	Laurell K. Hamilton, Cecilia Tan, Julie Zetterberg, Cynthia McQuillin, Jane Robinson
Marcon 40	May 27–29, 2005	Tom Smith, Barry and Sally Childs-Helton, Richard Hatch
Marcon 41	May 26–28, 2006	George R. R. Martin, Jody Lee, David G. Hartwell, Eugene Roddenberry Jr., Chris Kramer, B. J. Mitias, Dave & Judith Hayman, Steve Lee, Bill Roper
Marcon 42	May 25–27, 2007	Keith R. A. DeCandido, Laura Reynolds, John Mosby, Kevin Sorbo, Rick Faraci, Three Weird Sisters (Gwen Knighton, Brenda Sutton and Teresa Powell), Pierre Pettinger, Sandy Pettinger, G. Patrick Molloy, Looney Labs, Nancy Janda, Timothy Zahn
Marcon 43	May 23–25, 2008	Alexander James Adams, Steven Brust, Rebecca Forstadt, Kevin Standlee, Sister Sola, Ray van Tilburg, Toni Weisskopf, Hank Reinhardt, Robert Asprin, Jody Lynn Nye, Marc Singer, Leah Cairns
Marcon 44	May 22–24, 2009	Simon R. Green, Jordin Kare, Patricia McCracken, Chris Conway, David H. Lawrence XVII, Samuel Travis Clemmons, Arnold Blumberg
Marcon 45	May 28-30, 2010	Wen Spencer, Billy Tackett, Seanan McGuire, Central Ohio Paranormal Society (COPS), Twilight Creations, Richard Hatch, Casey Daniels, Shane Moore, Donnie Dunagan
Marcon 46	May 27-29, 2011	F. Paul Wilson, Eric Flint, Harry Turtledove, John Palencar, Leslie Fish, Brent Keith, The Extraordinary Contraptions, Marc G. Millis
Marcon 47	April 6-8, 2012	Tamora Pierce, Paula Guran, Kylie Gass, Dr. Bradley Lepper, Erica Neely, Manu Intiraymi
Marcon 48	March 29-31, 2013	Joe Haldeman, F. Paul Wilson, ToyBoat, Jeff Dee, Brian Keene, and (fan) Gay Haldeman
Marcon 49	May 9-11, 2014	Glen Cook, Heather Dale, Ben Deschamps, Eric Flint, Tim Griffin
Marcon 50	May 8-10, 2015	Many returning GoHs
Marcon 51	May 6–8, 2016	Seanan McGuire, S. J. Tucker, Kris Holder-Ried, James Wappel, Geoffrey A. Landis
Marcon 52	2017	Jacquline Carey, Talis Kimberley, Alexa Heart, Jason Marsden, Phil and Kaja Foglio, Charles Urbach, Kristen Simmons, Jason Hardy, Brit Bliss
Marcon 53	May 11-13, 2018	Larry Elmore, Juanita Coulson, Todd Cameron Hamilton, David Lee Pancake, Dandelion Wine, F. Paul Wilson (Author), Shoshie Bauer, Charles Xavier Conley, Cinda Williams Chima, Alexa Heart, and Mogchelle
Marcon 54	May 10-12 2019	Charles Gannon, John Picacio, David Gerrold, Hopeful Romantics, Rebecca Moesta, Kevin J. Anderson, The Harp Twins, Bob and Connie Trembley
Marcon 55	CANCELLED (May 8 - 10, 2020)	Carrie Vaughn, Sara Felix, Wolfgang Rumpf, The Blibbering Humdingers, Wreck the System
Marcon 55?	March 7-9, 2021

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Convention
Website	1966—

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