Ken Akamatsu
is a Japanese voice actress and singer affiliated with Aoni Production. She played Ayano in "Lucky Star", Natsumi Murakami in "Negima" and Mio Naganohara in "Nichijou". Her album, "Moi", was illustrated by Ken Akamatsu. Aizawa performed theme songs for the variety show "Gyōkai yōgo no kiso chishiki dan mitsu on'na gakuen" ().