Detlef Gieß is a German actor and voice actor, born on January 5, 1951. He trained at the Theaterhochschule Leipzig and has built a extensive career in German-language dubbing, lending his voice to hundreds of characters in film and television.

In the realm of anime, Gieß is known for providing the German voice for Fritz Bhaer in the 1993 anime series Little Women II: Jo's Boys, the German title of which is Missis Jo und ihre fröhliche Familie. In this series, he voiced the German husband of the protagonist, Jo. His other voice work in animation includes roles in various international productions that have been dubbed into German, such as providing the voice for the character Gene Smilas in the Code Geass spin-off series Akito the Exiled.

Beyond anime, Gieß's voice acting portfolio is extensive, with over 350 credited roles. He is recognized for being the consistent German voice for the Star Wars character Wilhuff Tarkin across several animated series, including Star Wars: The Clone Wars, Star Wars Rebels, and Star Wars: The Bad Batch. His other notable dubbing work includes roles in live-action series like The Wire and Andor, as well as films such as Shakespeare in Love. In addition to voice acting, Detlef Gieß has also appeared as a screen actor in numerous German film and television productions from the 1970s through the 1990s.