• Best Novel: Spin by Robert Charles Wilson (Tor) (Vote Breakdown)
• Best Novella: "Inside Job" by Connie Willis (Asimov's January 2005) (Vote Breakdown)
• Best Novelette: "Two Hearts" by Peter S. Beagle (The Magazine of Fantasy and Science Fiction October/November 2005) (Vote Breakdown)
• Best Short Story: "Tk'tk'tk" by David D. Levine (Asimov's March 2005) (Vote Breakdown)
• Best Related Book: Storyteller: Writing Lessons and More from 27 Years of the Clarion Writers' Workshop by by Kate Wilhelm (Small Beer Press) (Vote Breakdown)
• Best Dramatic Presentation, Long Form: Serenity Written and Directed by Joss Whedon. (Universal Pictures/Mutant Enemy, Inc.) (Vote Breakdown)
• Best Dramatic Presentation, Short Form: Doctor Who "The Empty Child" & "The Doctor Dances" Written by Steven Moffat. Directed by James Hawes. (BBC Wales/BBC1) (Vote Breakdown)
• Best Professional Editor: David G. Hartwell (Tor Books; Year's Best SF) (Vote Breakdown)
• Best Pro Artist: Donato Giancola (Vote Breakdown)
• Best Semiprozine: Locus, edited by Charles N. Brown, Kirsten Gong-Wong, & Liza Groen Trombi ( Vote Breakdown)
• Best Fanzine: Plokta, edited by Alison Scott, Steve Davies & Mike Scott (Vote Breakdown)
• Best Fan Writer: Dave Langford (Vote Breakdown)
• Best Fan Artist: Frank Wu (Vote Breakdown)
• John W. Campbell Award for Best New Writer of 2004 or 2005: John Scalzi (Vote Breakdown)

The John W. Campbell Award, sponsored by Dell Magazines, is not a Hugo Award, but appears on the same ballot as the Hugo Awards and is administered in the same way as the Hugo Awards.

"L.A.con" is a service mark of S.C.I.F.I.

"Worldcon", "World Science Fiction Convention", "Hugos", and "Hugo Awards" are service marks of the World Science Fiction Society, an unincorporated literary association.