Ayaka Saitō is a Japanese voice actress and stage actress from Tokyo, born on June 2, 1988. She began her career in entertainment as a child, making her voice acting debut in 1996 at the age of eight, voicing the title character in the anime film Toire no Hanako-san. The following year, she expanded into stage performance with a role in the musical Annie. Throughout her career, Saitō has been affiliated with several talent agencies, including Vocal, remax, and since August 2019, she has been represented by Aoni Production.

Saitō is widely recognized for a range of prominent anime roles. She is known for voicing Ruby in the Jewelpet franchise, Mitsukuni Haninozuka, also known as Honey, in Ouran High School Host Club, and Momiji Sohma in Fruits Basket. Other significant television roles include Takuma and Umi Mamizuka in School Babysitters, Mofurun in Witchy PreCure!, and Micchon in Eden of the East. She has also had a long-running role in the long-form children's series Genki Genki Nontan as the character Nontan.

In addition to her television work, Saitō has a substantial filmography in anime films, where she has played the character Brown across multiple installments of the Eiga Oshiri Tantei series, including Eiga Oshiri Tantei Saraba Itoshiki Aibō (Oshiri) yo and Eiga Oshiri Tantei: Star and Moon, as well as voicing the character Koupen-chan in the series of the same name. Her film work also includes roles in the Pretty Cure All Stars series and the 2023 film Alice to Therese no Maboroshi Kōjō. Beyond animation, her skills extend to video games, where she has voiced characters such as Rikaritta Aries in Sakura Wars V and Guriまる in DAME×PRINCE. Saitō has also performed in stage adaptations of these franchises, including the Sakura Wars stage shows and a DAME×PRINCE stage production.