Gilduin Tissier is a French voice actor born on November 2, 1977. He is primarily known for his extensive work in dubbing, providing the French voices for numerous characters in animated series and films, with a significant focus on anime.

Tissier has lent his voice to a wide array of characters in popular anime series. He voices the flamboyant Sound Hashira, Tengen Uzui, in the French adaptations of Demon Slayer: Kimetsu no Yaiba, including the Entertainment District Arc, Mugen Train Arc, and Swordsmith Village Arc. His other prominent anime roles include Willy Tybur in Attack on Titan The Final Season, Kentarō Yamamoto in Back Street Girls: Gokudols, Jun Guevaru in Baki Hanma, Johnny Bolt in Super Crooks, Bo Brantz in Spriggan, Ethan in Dragon's Dogma, and Asu in Dorohedoro. His repertoire also extends to roles in JoJo's Bizarre Adventure: Stone Ocean as Johngalli A, My Happy Marriage as Kiyoka Kudo, and The Ancient Magus' Bride as Each Uisge.

Beyond anime, Tissier's voice acting work includes dubbing for live-action and animated productions. He provided the European French voice for the character Battletrap in the film Transformers: Rise of the Beasts. In animation, he voiced various zombie and monster characters in the French dub of the film Hotel Transylvania.

In addition to voice acting, Tissier has appeared in live-action roles. His on-screen credits include a part in the 2007 short film Else and roles in the television series Heidi and Bulletproof. He also has a background in theatre, with stage credits in productions at prominent Parisian venues in the mid-2000s.