Aiko Mimasu ( November 2, 1910– January 18, 1982) was a Japanese actress. After the war, she became famous for her role in mother-movie films, and was known as the "mother-movie actress."

Her real name is Aiko Kawaguchi, and her maiden name is Inui. She was born in Minami-Sumiyacho , Minami-ku, Osaka City, Osaka Prefecture (now Chuo-ku ). Her husband is Shotaro Kawaguchi , a Naoki Prize-winning author . She has three sons and one daughter with Kawaguchi, and actor Hiroshi Kawaguchi is her eldest son. Ruriko Kikawa, a member of the 24th class of the Takarazuka Revue , is her younger sister.

In November of 1976, she was awarded the Medal with Purple Ribbon . In 1982 , she died of pancreatic cancer at Tokyo Women's Medical University Hospital at the age of 71.