Ayaka Saito (齋藤 彩夏, Saitō Ayaka, born 2 June 1988) is a Japanese actress and voice actress formerly employed by Vocal before transferring to remax. She is best known for voicing Momiji Sohma in Fruits Basket, Tomoka Rana Jude in Girls Bravo, Mitsukuni Haninozuka in Ouran High School Host Club and Ruby in the Jewelpet franchise.

She has great respect for her Ouran co-star Maaya Sakamoto, and calls the older lady "Onee-sama" (お姉さま, a very respectful way of saying "elder sister"). She announced that she left Vocal company in 31 December 2015.

On 1 August 2019, it was announced that she would leave Remax and join Aoni Production.