Nathalie Régnier is a French voice actor and artistic director, primarily known for her extensive work in the dubbing of animated series and films for the French market. Her career, which began in the 1980s, encompasses a wide range of roles in anime and Western animation, establishing her as a familiar voice to French audiences.

Régnier's filmography is rich with prominent anime roles from the 1980s and 1990s. She is recognized for voicing Isabelle in the magical girl series Magical Star Magical Emi. In the series Anime Sanjushi, an adaptation of The Three Musketeers, she provided the voice for Constance. She also voiced Elisa in the second series of Mahōtsukai Sally, taking over the role as a replacement voice. Her work in the anime horror genre includes the role of Yukari Tatsumiya in Doomed Megalopolis and Akemi in Urotsukidōji: Legend of the Overfiend.

Beyond the roles listed, her career features a variety of other significant parts. She is the French voice of Theodore in the long-running series Alvin and the Chipmunks, a role she held for many years. For the Robotech franchise, she voiced multiple characters, including Miryia Parino, Musica, and Sammie Porter across its different sagas. In more contemporary anime, she voiced Sumeragi Lee Noriega in both seasons of Mobile Suit Gundam 00 and Kiyoh in Gurren Lagann. Her other notable anime credits include Ashura in RG Veda, Sophie and Tania in ESPer Mami, and Malaia in Dominion Tank Police.

In addition to her work in anime, Régnier has been active in dubbing live-action films and television series. She is the regular French voice for actresses such as Anna Gunn, Tamlyn Tomita, and Lauren Graham. Her film dubbing credits include roles in major productions like Sully, Galaxy Quest, and The Descent. On the television side, she has dubbed characters in popular series such as Breaking Bad, Gilmore Girls, Parenthood, and 24 Heures chrono.

Later in her career, Régnier has also become highly active as an artistic director, overseeing the French-language adaptations for numerous films and television series. Her directing credits include the French versions of the Maze Runner film series, Desperate Housewives, Pretty Little Liars, and Manifest. This dual role as both a voice actor and a director highlights her broad expertise and significant influence in the French dubbing industry.