Showko Tsuda (津田 匠子, Tsuda Shōko, January 30, 1963) is a Japanese seiyū (voice actress) and stage actress from Nagasaki Prefecture. Her real name is Rika Kitazawa (北沢 利佳, Kitazawa Rika). She belongs to Ken Production. She was a member of the theater company Caramelbox until 2005.