Seina Katō is a Japanese voice actress from Osaka Prefecture, born on December 24 and affiliated with the talent agency Stardust Promotion. Her career includes a range of roles in anime television series, video games, and other voice performance media.

In anime, Katō is known for her role as Yanagi Uzaki, the younger sister of the main character Hana, in the second season of the comedy series Uzaki-chan Wants to Hang Out!. Her other anime credits from the early 2020s include roles such as Haley in Why Raeliana Ended Up at the Duke's Mansion, a student in Jujutsu Kaisen, and a background Umamusume in Umayon. She has also been cast in series like Blue Archive The Animation and The Strongest King, Second Life.

Beyond anime, Katō has contributed her voice to several video game titles. Her game roles include Erika in Konosuba: Fantastic Days, Rumia in Touhou LostWord, and a role in Pokémon Mezastar. Her performance work extends to voice dramas, audio books, and stage productions, demonstrating a breadth of activity within the voice acting industry.