Wilhelm Garth is the professional name of German voice actor Wilhelm-Rafael Garth, who was born on February 26, 1989. He began his career in dubbing at the very early age of five, establishing a long-standing presence in the German voice acting industry. He is also the older brother of fellow voice actor Salvadore-Hugo Garth.

Garth is primarily known for his extensive work in German dubbing, providing German voices for characters in numerous international films and television series. In the realm of anime, he has contributed his voice to several German-language adaptations. A key example of this work is his role as the voice of Shinta Mizumura in the OAV series Holy Knight. His other anime voice roles include Ouji Kousaka in both the Mirai Nikki television series and its Mirai Nikki: Redial OAV, Vridick in Beyblade: Metal Masters, Petruccio in Romeo × Juliet, and Gehl in Wolf's Rain under the alias Will Garth.

Beyond anime, a significant portion of his career is dedicated to dubbing live-action and animated productions. He is widely recognized as the long-standing German voice of actor Frankie Muniz, most notably for the title role in the popular series Malcolm mittendrin (Malcolm in the Middle), which he voiced from 2000 to 2006. His other notable dubbing roles include Noel Kahn in Pretty Little Liars, Josh Shannon in Terra Nova, and young characters in major Hollywood films such as Die Mumie kehrt zurück (The Mummy Returns), Unbreakable – Unzerbrechlich (Unbreakable), and Fluch der Karibik (Pirates of the Caribbean). With over 127 credited speaking roles, his work demonstrates a broad range and a consistent presence in the German dubbing industry.