Laëtitia Lefebvre is a French actress widely recognized for her extensive work in dubbing, providing the French-language voices for numerous international film, television, and video game characters. While primarily known for dubbing live-action roles, her career also encompasses significant contributions to animation and anime.

Before establishing herself in voice acting, Lefebvre trained in dramatic arts at the Cours Viriot and studied performing arts at the University of Paris Nanterre. She began her career on the stage, performing in classic plays by authors such as Feydeau, Molière, and Ionesco throughout the late 1990s and 2000s. This theatrical foundation preceded her entry into the world of dubbing, where she found substantial success.

Lefebvre has become one of the most prominent French dubbing voices, renowned for being the official French voice of several major actresses. This includes Emily Blunt, whom she has voiced in numerous films including Edge of Tomorrow, the A Quiet Place series, and Oppenheimer. She is also the regular French voice for Karen Gillan, lending her voice to Nebula across multiple Marvel Cinematic Universe films and to Gillan's characters in the Jumanji reboot series. Additionally, she is known for dubbing Michelle Rodríguez in the Fast & Furious franchise and Evangeline Lilly as Tauriel in The Hobbit films and as the Wasp in Ant-Man and the Wasp: Quantumania. Her other regular dubbing subjects include Diane Neal, Danica McKellar, and Roselyn Sanchez.

In the realm of animation and anime, Lefebvre's work is varied. She voiced the character Naoh in the French version of The Legend of Tarzan series. In the original French animation film Dofus, livre 1: Julith, she took on the principal role of Julith Jurgen. She provided voices for the French dubs of major animated features, including the role of the police chief in DreamWorks' Les Bad Guys and its upcoming sequel, as well as the character Fear's Mother in Vice-versa. She also voiced Shi Long in the series Kung Fu Panda: Les Pattes du destin. As an example of her work in Japanese animation, Lefebvre voiced multiple characters, including Dorothea, in the French dub of the anime series Sirius the Jaeger.

Lefebvre is also highly active in the video game industry. She is the French voice of the iconic AI Cortana in the Halo series starting from Halo 4. Other notable video game roles include Emily Kaldwin in Dishonored 2, Nadine Ross in the Uncharted series, Urbosa in The Legend of Zelda: Breath of the Wild, and Panam Palmer in Cyberpunk 2077. Her collaborations extend to television series, where she has had recurring roles dubbing characters in popular shows such as Person of Interest (as Root), NCIS, and Grey's Anatomy.