Katharina von Keller is a German voice actress born on March 23, 1982, in Hamburg. She has built a extensive career spanning over two decades, lending her voice to numerous characters in animation, live-action films, and television series for the German market.

Keller is perhaps best known for her long-standing role as Sakura Haruno in the German adaptations of the popular Naruto anime franchise. She first voiced the character in the original Naruto series starting in 2006 and continued through Naruto Shippūden and into the sequel series Boruto: Naruto Next Generations, where the character is known as Sakura Uchiha. Her portrayal extends to many of the franchise's feature films, including Naruto Shippūden: The Lost Tower and Naruto Special: Battle at Hidden Falls. I Am the Hero!.

Beyond the world of Naruto, her anime voice work is notably diverse. She voiced Bianca in the 2019 CGI film Dragon Quest Your Story, a role for which she also served as the ADR director, demonstrating her work behind the microphone as well. Her other prominent anime roles include Angel White in Demon Lord, Retry!, Miyo Inbami in the Kakegurui series, Veronica Kulikova in the film Expelled from Paradise, and Suzu Shutou in Riddle Story of Devil. She has also taken on roles in major series such as Jericho in The Seven Deadly Sins franchise, Sayaka Kirasaka in Strike the Blood, and Isuzu Sento in Amagi Brilliant Park.

In addition to her work in Japanese animation, Keller's voice is familiar to German audiences from a wide array of other genres. She has dubbed characters in live-action series like The Crown, where she voiced Queen Elizabeth II, and in animated productions such as Willkommen bei den Louds as Lori Loud. Her career also includes voice work in video games, with notable roles like Riven in League of Legends and Misty in Call of Duty: Black Ops 2, as well as participation in German audio dramas like Die drei!!! and Die drei???.