A convention in Des Moines, IA sponsored by the Des Moines Science Fiction Society. Rusty Hevelin was toastmaster for most of them!

Convention Dates GoHs
DemiCon 1 Apr 23-25, 1990 C. J. Cherryh, Robert Daniels Jr
DemiCon 2 Apr 26-28, 1991 Joe Haldeman, Lucy Synk, Gay Haldeman
DemiCon 3 Mar 27-29, 1992 Rob Chilson, David Cherry, Myrna Logan
DemiCon 4 Mar 26-28, 1993 Mickey Zucker-Reichert, Erin Mckee, Mark Moore
DemiCon 5 Apr 22-24, 1994 Glen Cook, David Lee Anderson, Pierre Pettinger, Sandy Pettinger
DemiCon 6 May 5-7, 1995 Roger Zelazny, Vincent Jo-Nes, Bob Tucker
DemiCon 7 May 3-5, 1996 Algis Budrys, Keith Berdak, Otto Sheller, Ruth Sheller
DemiCon 8 May 2-4, 1997 Barbara Hambly, Mitchell Davidson Bentley, Charles Piehl
DemiCon 9 May 1-3, 1998 George Alec Effinger, William J. Hodgson, Marshall Willis, Dee Willis
DemiCon 10 Apr 30-May 2, 1999 Spider and Jeanne Robinson, Nene Thompson, Bill Broughton
DemiCon 11 May 5-7, 2000 Lois McMaster Bujold, Susan Van Camp, Alois Tchampl, Wendy Tchampl
DemiCon 12 May 4-6, 2001 Harry Harrison, Sergey Poyarkov, Tadao Tomomatsu
DemiCon 13 May 3-5, 2002 F. Paul Wilson, Alan M. Clark, Dennis Lynch
DemiCon 14 May 2-4, 2003 Octavia E. Butler, Lubov, Lynda Sherman
DemiCon 15 May 1-2, 2004 Emma Bull, Will Shetterly, Alan Gutierrez, Rusty Hevelin
DemiCon 16 July 29-31, 2005 Brad Linaweaver, Mike Cole, Scott Corwin, Sheila Lenkman
DemiCon 17 July 28-30, 2006 Frederick Pohl, Janet Chui, Ted Poovey, Darice Schirber-Poovey
DemiCon 18 May 18-20, 2007 Catherine Asaro, Theresa Mather, Steve Houle
DemiCon 19 May 2-4, 2008 Steven Barnes, Mitchell Davidson Bentley, Joe Myers, Inger Myers
DemiCon 20 May 1-3, 2009 Joe Haldeman, Sara Butcher, Roger Tener
DemiCon 21 May 14-16, 2010 Karl Schroeder, Don Maitz, Gregg Parmentier
DemiCon 22 April 29 - May 1, 2011 Sarah Prineas, Sarah Clemens, John & Denise Garner
DemiCon 23 May 4-6, 2012 Patricia Briggs, Allen Williams, Ange Anderson, Brian Anderson
DemiCon 24 2013 David Weber, Scott Ross, Mitch & Mary Thompson, Dennis Lynch
DemiCon 25 2014 Tee Morris, Lojo Russo, Kevin Roche, Andrew Trembley, Susan Leabhart
DemiCon 26 2015 Jim C. Hines, Megan Lara, Michelle Clark, Tadao Tomomatsu
DemiCon 27 2016 Adam J. Whitlatch, Alan M. Clark, Gary & Erin Wickering, Tadao Tomomatsu
DemiCon 28 2017 Lars Pearson, Ron Wagner, Richard Harper, Susan Leabhart
DemiCon 29 May 4-6, 2018 Christina Henry, Susan Leabhart, Christine Mitzuk
DemiCon 30 May 3-5, 2019 Gail Carriger, John Picacio, Joe & Gay Haldeman, Becky Kinnamon, David Winterton, Susan Leabhart
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