Katy Karrenbauer (born December 31, 1962, in Duisburg) is a German actress, voice-over artist, singer, and author. She rose to widespread public prominence through her role as Christine "Walter" in the television series *Hinter Gittern – Der Frauenknast*.
Her acting career initially began in the theater—including at the Urania Theater in Cologne—as well as on various stages throughout Germany. She made her on-screen debut in 1994, playing the paramedic Karo Kaiser in the RTL series *Notaufnahme*. This was followed by numerous guest appearances in series such as *Verbotene Liebe*, *Balko*, *Die Wache*, and *Nikola*.
Karrenbauer achieved her breakthrough in 1997 with her role as Christine Walter in *Hinter Gittern – Der Frauenknast*, a character she portrayed across a total of 16 seasons, continuing until 2007. For her performance, she was nominated for the German Television Award in 1999.
