May 6-8, 2011
Gaslight Gathering
San Diego, CA
Steampunk
Literature Guest of Honor: Kim Newman

May 6-8, 2011
The Steampunk World's Fair
Somerset, NJ
Steampunk
Author Guest: CJ Henderson

May 6-8, 2011
Leprecon
Mesa, AZ
Science fiction and fantasy, with an emphasis on art
Guests of Honor: John Picacio, Elizabeth Bear, Sarah Monette, Seanan McGuire

May 13-15, 2011
OutlandaCon
Atlanta, GA
GLBT science fiction, fantasy, horror and gaming convention

May 19-22, 2011
Nebula Award Weekend
Washington DC
Annual Nebula Awards from the SFWA
Toastmaster: Michael Swanwick

May 20-22, 2011
Mobicon
Mobile, AL
Science fiction, fantasy, comic, anime, and gaming

May 20-22, 2011
KeyCon
Winnipeg, Manitoba, Canada
Science fiction and fantasy
Author Guests of Honor: Darrell K. Sweet, Barbara Galler-Smith

May 26-30, 2011
WisCon
Madison, WI
Feminist Science Fiction
Guests of Honor: Nisi Shawl

May 27-30, 2011
Balticon
Baltimore, MD
Sponsored by the Baltimore Science Fiction and Fantasy Society
Guests of Honor: Ben Bova, Vincent Di Fate, Steve Geppi, Paolo Bacigalupi

May 27-29, 2011
ConQuest
Kansas City, MO
Science Fiction
Guest of Honor: Tamora Pierce

May 27-29, 2011
Marcon
Columbus, OH
Multiple Alternative Realities Convention (science fiction & fantasy)
Guests of Honor: F. Paul Wilson, Eric Flint

May 27-30, 2011
MisCon
Missoula, MT
Science Fiction
Author Guest: Carol Berg

May 27-29, 2011
Oasis
Orlando, FL
Science Fiction
Writer Guest of Honor: David Drake

May 27-29, 2011
CONduit
Salt Lake City, UT
Science Fiction and Fantasy
Author Guest of Honor: Carole Nelson Douglas

May 27-29, 2011
Baycon
San Jose, CA
Science Fiction and Fantasy
Guests of Honor: John Picacio, Bobbie DuFault

May 27-30, 2011
World Steam Expo
Dearborn, MI
Steampunk