Katharina Schwarzmaier is a German actress and voice actress known for her extensive work in dubbing, particularly for anime series and films. Born in Munich on October 26, 1985, she comes from a family of actors and voice actors; her father is the actor Michael Schwarzmaier, and her siblings, Caroline and Tim Schwarzmaier, are also active in the field of dubbing.

Schwarzmaier was discovered as a voice actress at the age of eight. After completing her secondary education, she gained practical experience through internships at various film companies. She pursued formal training at the private drama school ISSA in 2008, successfully completing her studies in 2010. In addition to her voice work, she has appeared in front of the camera in various film and television productions and briefly hosted the afternoon program on RTL II in 2009.

Her career as a voice actress encompasses a wide range of roles in both live-action and animated productions. She is particularly well-recognized within the anime community for lending her voice to prominent characters. These roles include the determined Eia Arakawa in Doreiku The Animation, the fierce and confident Nobara Kugisaki in the hit series Jujutsu Kaisen, and the Saber-class servant Nero Claudius in Fate/Extra Last Encore and its related installments. Her other notable anime credits include the character Mia in the film Black Fox, Yukiko Shirato in the boxing series Megalobox, the teacher Sadayo Kawakami in Persona 5 the Animation, and a role as Yuko in the Studio Ghibli film From Up On Poppy Hill.

Beyond these specific credits, Schwarzmaier's voice work is prolific and varied. She is the German voice for Clarke Griffin in the long-running series The 100, for Dr. Claire Browne in The Good Doctor, and for the character Jane Villanueva in Jane the Virgin. She has also voiced characters in major productions such as The Expanse, Loki, and Reacher, demonstrating her versatility and consistent presence in the German dubbing industry.