Reiko Oshida (大信田礼子) is a Japanese actress and singer. Oshida's career started after winning the 1966 International Teen Princess pageant (held in Chicago, Illinois). This led to a role in the Daiei Studios film School for Thieves (Kigeki: dôrobô gakkô, 1968). She subsequently appeared in all four of Toei Company's Delinquent Girl Boss films.