Julien Sibre is a French actor and theater director, born on May 14, 1974, who has built a significant career in voice acting alongside his stage work. He was trained at the École de Théâtre Les Enfants Terribles, graduating in 1996. In the realm of live performance, he is highly acclaimed, having received the Molière award for Best Director in 2011 for his work on the play Le Repas des fauves.

Within the field of dubbing, Sibre is recognized for his voice work in animation and live-action. A notable role in anime is his portrayal of Agito Makishima, the character who becomes Guyver III, in the French adaptation of the series The Guyver: Bio-Booster Armor. He provided the voice for this character in the later episodes of the OVA series.

Beyond anime, Sibre has an extensive career dubbing actors in film and television. He is particularly known as one of the regular French voices for actor Martin Freeman, whom he has dubbed in numerous films including The Hobbit trilogy, Captain America: Civil War, and Black Panther. He is also a go-to voice for actor Eddie Kaye Thomas, notably in the American Pie film series. His other voice work in television includes roles in series such as Chucky and Star Trek: Deep Space Nine. In the realm of video games, Sibre has lent his voice to characters in major titles like Ratchet and Clank: Rift Apart, Assassin's Creed Origins, and Star Wars Battlefront II.