Keiko Aizawa (相沢恵子, Aizawa Keiko?, born November 22, 1963) is a Japanese stage actress and voice actress, who is affiliated with the Gekidan Subaru production company. She is married to Shigeru Ushiyama, a stage actor, voice actor and narrator also with Gekidan Subaru. Aizawa is originally from Kanagawa Prefecture.