Best Short Form:
- Elizabeth Bear, "Les Innocents/Lumiere" (in New Amsterdam, Subterranean Press)
- Michael Flynn, "Quaestiones Super Caelo Et Mundo" (in Analog, 7/07)
- Matthew Johnson, "Public Safety" (in Asimov's, 3/07)
- Jess Nevins, "An Alternate History of Chinese Science Fiction" (in No Fear of the Future, May 17, 2007)
- Chris Roberson, "Metal Dragon Year" (in Interzone, 12/07)
- Kristine Kathryn Rusch, "Recovering Apollo 8" (in Asimov's, 2/07)
- John Scalzi, "Missives from Possible Futures #1: Alternate History Search Results" (in Subterranean Magazine, Winter 2007)
Best Long Form:
- Michael Chabon, The Yiddish Policemen's Union (HarperCollins)
- Robert Conroy, 1945: A Novel (Ballantine Books)
- Mary Gentle, Ilario (The Lion's Eye and The Stone Golem) (Eos)
- Jay Lake, Mainspring (Tor Books)
- Sophia McDougall, Rome Burning (Orion)
- Jo Walton, Ha'penny (Tor Books)