Hiyori Nitta is a Japanese voice actress born in Tokyo on July 1, 1997. She is affiliated with the Arts Vision talent agency. Her interest in becoming a voice actor began in elementary school after watching the anime HeartCatch PreCure!. To pursue this goal, she enrolled in the Japan Narration Acting Institute during her third year of junior high school and later joined Arts Vision while in high school.

Nitta made her debut as a voice actor in 2014 with a role in the anime series Nobunagun. Later that same year, she landed her first leading role as Rino Endō in the anime adaptation of Jinsei. Since her debut, she has built a career spanning over a decade, taking on a wide variety of roles in television anime, animated films, and video games.

Among her many roles, Nitta has voiced several of the characters listed. She played the angel Gabriel in the 2018 anime series The Seven Heavenly Virtues. In the romantic comedy The Ice Guy and His Cool Female Colleague, which aired in 2023, she provided the voice for the character Yukimin. She was also the voice behind Izumi Asagi in both the mobile game and the 2019 anime adaptation of Pastel Memories. In the 2020 idol comedy Dropout Idol Fruit Tart, she starred as the main protagonist, Ino Sakura. Nitta voiced the wolf beastkin Sara in the 2021 anime Seirei Gensouki - Spirit Chronicles. Earlier in her career, in 2016, she played the role of Hime "Hime-chan" Wazumi in the series High School Fleet.

Beyond these roles, Nitta is also widely recognized for her work in long-running and popular franchises. She voices the character Karin Domyoji in The Idolmaster: Cinderella Girls franchise. She is also known for her role as the horse girl Matikanefukukitaru in the Uma Musume Pretty Derby multimedia project. Her video game work extends to titles such as Azur Lane, where she voices Prinz Heinrich, and Blue Archive, where she voices Satohama Umika. In addition to her voice acting, Nitta has performed theme songs for some of the series she has starred in, including the ending theme for Jinsei.