Johanna-Julia Spitzer is a German actress and voice artist with a career spanning film, television, and theater. She was born in Halle an der Saale in 1975 and completed her professional acting training at the Schauspielschule Fritz Kirchhoff Der Kreis in Berlin from 1996 to 1999. Her native language is German, and she is also proficient in English, Russian, and Spanish.

As a voice actor, Spitzer specializes in dubbing, the process of recording German-language dialogue for foreign productions. In the animation and anime industry, she is known for voicing the character Akiko Nanbara in the 2018 Netflix anime series A.I.C.O. -Incarnation-. In this series, she provided the German voice for the original Japanese character portrayed by Atsuko Tanaka. Her work on this project was completed at the Lautfabrik synchron studio in Berlin.

Beyond this specific role, Spitzer's voice work encompasses a variety of other productions. Her dubbing credits include the role of Bintou in the film Kandisha, Vivian in the anime series The Seven Deadly Sins: Wrath of the Gods, and various characters in series such as On My Block and DC Super Hero Girls. Her work demonstrates a pattern of collaboration with the Lautfabrik synchronstudio in Berlin, where she has recorded dubbing for multiple projects.

In addition to her voice acting, Spitzer maintains an extensive career as a stage and screen actress. Her theater work is particularly notable, with numerous performances in Shakespearean productions for companies such as the Shakespeare Company Berlin and at various theaters including the Staatstheater Cottbus and the Hans-Otto-Theater in Potsdam. Her live-action acting credits also include roles in film and television productions dating back to the late 1990s.