Shiori Mutō is a Japanese voice actor and stage actress born on July 22, 1997, in Tokyo, Japan. She made her voice acting debut in 2014, providing the voice for the character Shio Ogura in the television anime series Nobunagun. Her interest in pursuing a career in voice acting was sparked during her first year of junior high school after attending an anime event; she has specifically cited her admiration for voice actor Daisuke Ono, whom she heard in the series Psychic Detective Yakumo, as a key inspiration.

Mutō is affiliated with the talent agency Clair, having previously been with ARTSVISION. She is a graduate of the Nihon Narration Engi Kenkyujo, a prestigious training school for voice actors.

One of her notable roles is as Ui Migii in the 2017 television anime series Armed Girl's Machiavellism. Her other anime credits include minor roles in series such as New Game! and Love Live! Sunshine!!. Beyond anime, Mutō has an extensive portfolio in stage theater, including starring and leading roles in several productions. She has notably appeared in multiple installments of the Assault Lily stage play series, portraying the character Tianjin Maling. She also founded her own theatrical production unit, mucho produce, for which she has both produced and starred in plays.

In addition to animation and stage work, Mutō has contributed her voice to video games, including characters in Tenkuu no Craft Fleet, and has performed in foreign language dubs of animated films. She has also participated in radio programs and audio dramas. Her personal interests include playing video games, reading, karaoke, and cooking.