Gerd Duwner (1925-1996) was a German comedian and voice actor who dubbed the voice of Ernie on Sesamstrasse.

Together with Wolfgang Kieling, who dubbed Bert, they originated the duo on German language TV. Duwner also voiced the narrator in The Dark Crystal and appeared in Folge 1270 of Sesamstrasse, playing an inspector.

Duwner's dub credits include the German voices of Mickey Rooney in Breakfast at Tiffanys, Festus (Ken Curtis) in Gunsmoke, and Bosley in Charlie's Angels. Animated dub credits include roles in several Disney productions, including Goofy in the shorts and Bernard in The Rescuers, and Barney Rubble in the animated series The Flintstones. Duwner was also the standard dub voice for Danny DeVito, Oliver Hardy, Ned Beatty (including the Superman films), and Chico Marx.