Katja Hirsch is a German voice actor and stage actress known for her work in dubbing, audio books, and radio plays. Her training took place at the Hochschule für Musik und Theater in Bern, where she studied from 2000 to 2004. Following her education, Hirsch held engagements at the Schauspielhaus Graz from 2004 to 2006 and at the Staatstheater Mainz from 2006 to 2009 before embarking on a freelance career as an actress and voice actor in 2010. Her voice is characterized as a mezzo-soprano, described as versatile in tone.

Hirsch`s most prominent anime voice role is Yuka Amino in the 2013 film Blood-C: The Last Dark. This character, whose original Japanese voice was performed by Masumi Asano, is a classmate of the protagonist Saya Kisaragi and later becomes the new governor of Tokyo. As of the available records, this remains her only confirmed credit in an anime production.

Beyond anime, her voice work primarily focuses on German-language productions for broadcasters and publishers. She has worked extensively as a voice-over artist for channels such as ARTE, ZDF, SWR, and RBB. Her portfolio also includes audio books and radio plays for Audible, Der Hörverlag, and German public broadcasters including BR, HR, WDR, and SRF. Notable recurring projects include her involvement in the children`s radio play series 1001 Betthupferl. In the commercial sector, she has lent her voice to campaigns for brands including VW, Ebay, and BiFi.

At present, there is no documented information regarding major industry awards, distinctions, or recurring professional collaborations with specific anime directors, studios, or other voice actors in the context of her animation dubbing work.