May 8, 2008
Symposium: Science Fiction as a Literary Genre
Royal College of Surgeons, Lincoln's Inn, London
Guests: Neal Stephenson, Andy Sawyer, John Clute

May 9-11, 2008
Leprecon
Mesa, AZ
Science fiction and fantasy, with an emphasis on art
Author Guest of Honor: Emily & Ernest Hogan

May 16-18, 2008
Chronicling Mars
Science fiction
Riverside, CA
Special Guests: Ray Bradbury, Frederik Pohl and many more

May 16-18, 2008
Mobicon
Mobile, AL
Science fiction, fantasy, comic, anime, and gaming
Guests: Jim Butcher

May 16-19, 2008
KeyCon
Winnipeg, Manitoba, Canada
Science fiction and fantasy
Guests: Eric Flint, David Mattingly, Jane Yolen, Tanya Huff

May 23-26, 2008
Balticon
Baltimore, MD
Sponsored by the Baltimore Science Fiction and Fantasy Society
Guests of Honor: Connie Willis

May 23-26, 2008
Baycon
San Jose, CA
Science Fiction and Fantasy
Guests of Honor: Tim Powers

May 23-25, 2008
CONduit
Salt Lake City, UT
Science Fiction and Fantasy
Guest of Honor: Michael A Stackpole

May 23-25, 2008
ConQuest
Kansas City, MO
Science Fiction
Guest of Honor: Joe R Lansdale

May 23-25, 2008
Marcon
Columbus, OH
Multiple Alternative Realities Convention (science fiction & fantasy)
Guest of Honor: Robert Asprin, Jody Lynn Nye

May 23-26, 2006
MisCon
Missoula, MT
Science Fiction
Guest: Margaret H. Bonham

May 23-25, 2008
Oasis
Orlando, FL
Guest of Honor: David Gerrold, John Scalzi

May 23-26, 2008
WisCon
Madison, WI
Feminist Science Fiction
Guests of Honor: Maureen McHugh, L. Timmel Duchamp