International Horror Guild Award for short story "Honey in the Wound," 2008
Bram Stoker Award for short story "Nimitseahpah," 2004
Bram Stoker Award Finalist for story collection Cat in Glass and Other Tales of the Unnatural, 2002
ALA Best Book for Young Adults for story collection Cat in Glass and Other Tales of the Unnatural, 2002
Bram Stoker Award Finalist for short story "Demolition," 2001
Bram Stoker Award for children's book The Power of Un, 2000
Golden Duck Award for children's book The Power of Un, 2000
Georgia Children's Book Award for children's book The Power of Un, 2000
Anne Spencer Lindbergh Prize Silver Medalist for children's book The Power of Un, 2000
Nautilus Award Finalist for children's book The Power of Un, 2000
PEN USA West Award Finalist for children's book The Power of Un, 2000
Bram Stoker Award for short story "Bigger than Death," 1998