Saori Seto, also known by the Japanese spelling 世戸 さおり, is a Japanese voice actress and stage actress born on September 3, 1982, in Saitama Prefecture. She began her career in the entertainment industry in 2005, with one of her earliest voice roles being a teacher in the television animation ToHeart2. For a significant portion of her career, she was affiliated with the talent agency Mausu Promotion, but she left the agency in April 2014 to work as a freelance voice talent.

Seto is known for her versatile voice, bringing to life a wide array of characters across anime, video games, and foreign language dubbing. She has taken on several prominent and recurring roles in major anime franchises. One of her most recognized characters is Mio Sakamoto in the long-running Strike Witches series. She voiced this role in multiple installments, including Strike Witches: Road to Berlin, Strike Witches: Operation Victory Arrow, and the chibi-style spin-offs World Witches Take Off! and Strike Witches: 501st JOINT FIGHTER WING Take Off!. Another significant and recurring role is Grayfia Lucifuge in the High School DxD series. In the fantasy series Fairy Tail, she provided the voice for the character Evergreen. Her other anime roles include Yuki Sasamori in Kanokon: The Girl Who Cried Fox, Rika in Fighting Beauty Wulong, and Yuna Kadokura in the web anime Copihan.

Beyond anime, Seto has an extensive portfolio in video game voice acting. She is particularly well-known for voicing Anna in the Fire Emblem series, including in Fire Emblem: Awakening and Fire Emblem Heroes. She also voiced the character Zelda in Hyrule Warriors. Her game credits extend to titles such as Izuna: Legend of the Unemployed Ninja, Catherine, and the Japanese dub of Fallout 4, where she voiced Piper. Her skills are also in demand for dubbing foreign films and television series into Japanese, where she has notably dubbed for actresses like Demi Lovato and Meghan Markle.