Petra Schmidt-Decker is a German voice actor, dialogue director, and scriptwriter known for her work in anime and other media dubbing. She is recognized for providing the German voice for the character Yayoi Yukino in the classic anime series Queen Millennia, known in German as Die Königin der tausend Jahre. Her performance in this 1981-1982 series, featured in the 1991 German synchronization, stands as a key credit in her anime voice acting career.

Beyond anime, her voice acting portfolio includes roles in Disney adaptations. She voiced the character Driselle, one of the stepsisters, in the German-language version of Walt Disney's Cinderella. Her work also extends to audio dramas, where she contributed as a voice actor for productions such as Mäusehochzeit.

In addition to performing, Schmidt-Decker has worked extensively behind the microphone as a creative lead. She served as the scriptwriter and director for the German adaptation of Cinderella. Similarly, for the audio drama Mäusehochzeit, she took on the roles of producer, author, director, and narrator, demonstrating a broad range of skills in audio production beyond voice acting alone.