The 8th Costume Designers Guild Awards, given on February 25, 2006, honored the best costume designs in film and television for 2005. The nominees were announced on January 11, 2006.{{cite web|url=https://variety.com/2006/film/awards/costume-guild-reveals-noms-1117935957/|title=Costume Guild reveals noms|work=Variety|author=Variety Staff|date=January 11, 2006|accessdate=August 22, 2022}}

Winners and nominees

The winners are in bold.{{cite web|url=https://variety.com/2006/film/awards/atwood-in-fashion-at-costumers-kudos-1117938896/|title=Atwood in fashion at costumers’ kudos|work=Variety|first=Maressa|last=Brown|date=February 26, 2006|accessdate=August 22, 2022}}

=Film=

style="width=50%"\|Excellence in Contemporary Film !style="width=50%"\|Excellence in Period Film
class=wikitable style="width=100%"
valign="top" \| Transamerica – Danny Glicker Hustle & Flow – Paul Simmons Mr. & Mrs. Smith – Michael Kaplan Shopgirl – Nancy Steiner Syriana – Louise Frogley \| valign="top" \| Memoirs of a Geisha – Colleen Atwood Capote – Kasia Walicka-Maimone Good Night, and Good Luck – Louise Frogley Rent – Aggie Guerard Rodgers Walk the Line – Arianne Phillips
style="width=50%" colspan="2"\|Excellence in Fantasy Film
valign="top" colspan="2"\| The Chronicles of Narnia: The Lion, the Witch and the Wardrobe – Isis Mussenden Batman Begins – Lindy Hemming Charlie and the Chocolate Factory – Gabriella Pescucci Star Wars: Episode III – Revenge of the Sith – Trisha Biggar

=Television=

style="width=50%"\|Outstanding Contemporary Television !style="width=50%"\|Outstanding Period/Fantasy Television
class=wikitable style="width=100%"
valign="top"\| Six Feet Under – Jill M. Ohanneson Alias – Laura Goldsmith Arrested Development – Katie Sparks Desperate Housewives – Catherine Adair Nip/Tuck – Lou Eyrich \| valign="top"\| Rome – April Ferry Carnivàle – Chrisi Karvonides-Dushenko Cold Case – Patia Prouty Deadwood – Katherine Jane Bryant That '70s Show – Melina Root
style="width=50%" colspan="2"\|Outstanding Made for Television Movie or Miniseries
valign="top" colspan="2"\| Elvis – Eduardo Castro Empire Falls – Donna Zakowska Lackawanna Blues – Hope Hanafin Their Eyes Were Watching God – Eduardo Castro Warm Springs – Hope Hanafin