Julia Ziffer is a German voice actress born in 1975. She has built a extensive career lending her voice to numerous characters in anime series and films for the German-speaking market, as well as providing German dubs for live-action productions and voice work for video games and audio plays.

Her body of anime work is varied, featuring several prominent and long-running series. She voiced the hyperactive Tomo Takino in the comedy series Azumanga Daioh and its accompanying short film. In the fantasy film The Weathering Continent, she took on the role of Baruni Rifas. She provided the voice for Akiko Shimizu, a supporting character in the Studio Ghibli television film Ocean Waves. Her roles also include Kei Amemiya in the dark political thriller Jin-Roh: The Wolf Brigade, and Yoko in the OVA series Beyond.

Ziffer is perhaps best known for her long-standing association with the Neon Genesis Evangelion franchise. She initially voiced the character Asuka Langley Soryu in the original television series and films for their first DVD releases in Germany. She continued with the role for the Rebuild of Evangelion film series, providing the German voice for Asuka Langley Shikinami in all installments, including the final film, Evangelion: 3.0+1.0: Thrice Upon a Time. In the 2007 animated film JAPAN, Our Homeland, she played the part of Rieko Sakamoto.

Beyond these specific credits, her filmography demonstrates frequent collaborations within the German dubbing industry, where she has voiced recurring characters in many other major anime. These include Kallen Stadtfeld in Code Geass, Miyako Inoue in Digimon 02, Sonoko Suzuki in Detective Conan, Chi-Chi in the Dragon Ball Z series and films, Sarah McDougal in Love Hina, and Azaka Kokutō in The Garden of Sinners film series. In addition to her anime work, Ziffer is also known for being the regular German voice for actress Mary Lynn Rajskub in the television series 24 and for providing the German voice of Britney Spears in several films.