Stefan Kaminski (b. 1974) is a German actor, author and voice over artist, providing the voice for Kermit the Frog in Die Muppets and for surrounding promotional material and appearances like Verleihung der Goldenen Kamera. He reprised the role in subsequent guest spots, such as on Good Luck Charlie. For the German dub of the sequel Muppets Most Wanted, Kaminski voiced both Kermit and Constantine.
Born in Dresden, and stage trained in Berlin, Kaminski became an actor and narrator of such German audio books as Neil Gaiman's American Gods. He also voices the 3-D animated rat Marvi Hämmer for German language children's channel KI.KA. Since dubbing Kermit, other leading dub roles have followed, including Jared Leto in Suicide Squad.