Gaëtan Wiernik, also known by the alternate name Gaëtan Wenders, is a Belgian voice actor born in Brussels on April 10, 1968. He is primarily known for his work in the French-language dubbing of various anime series.

Wiernik has contributed his voice to several major anime franchises. In the series Saint Seiya: The Hades Chapter - Sanctuary, he is credited with the role of a young Dohko de la Balance, as well as the character Capella. He also voiced the character Jenos Hazard in the anime Black Cat. His other prominent roles include Duke Devlin in Yu-Gi-Oh! and Butch in the Pokémon anime. Additionally, he provided voices for the Naruto series, taking on the roles of the First Hokage, Hashirama Senju, and Shikaku Nara.

His career demonstrates a consistent presence in the field of anime dubbing, with credits spanning from the late 1990s and early 2000s through to more recent projects.