Julia Vaidis-Bogard, sometimes credited as Leah Vaidis-Bogard, is a French actress known for her extensive work in dubbing for film and television. She has built a substantial career lending her voice to characters in both live-action and animated productions.

One of her most recognizable roles in the anime genre is providing the French voice for the character of Major Motoko Kusanagi, also known as Major Mira Killian, in the 2017 live-action film adaptation of Ghost in the Shell. This role saw her dubbing over the performance of actress Scarlett Johansson, with whom she has a recurring professional association.

Beyond this high-profile role, some of her other work in animation includes voicing the title character in the French animated series Agrippine and providing a voice for the series Jurassic World: Chaos Theory. Her broader voice-acting career features a notable recurring collaboration with several actresses. Specifically, she has regularly dubbed the performances of Scarlett Johansson in many of her films since 2004, including roles in the Marvel Cinematic Universe as Natasha Romanoff (Black Widow) and in films like Lucy and Marriage Story. She is also a regular voice for actress Elisabeth Harnois, notably in the television series CSI: Crime Scene Investigation, and for Lyndsy Fonseca in the series Nikita.

Vaidis-Bogard has also worked in theater, with stage credits including performances in productions of Molière and Marivaux, as well as a role in the Festival d'Avignon. In addition to her on-screen dubbing, she has worked on audio fiction, performing as the heroine Kim Melville in the sonic drama Carthago.