Seiko Tanabe (?? ??, Tanabe Seiko, 27 March 1928 – 6 June 2019) was a Japanese author.
She graduated from the Department of Japanese Literature of Shoin Joshi Senmon Gakko (now Osaka Shoin Women's University).
Author of numerous novels, she won the Akutagawa Prize, Yomiuri Prize, and Asahi Prize, and received the Order of Culture for her contributions to literature.