Toshiko Hamayotsu (浜四津 敏子, Hamayotsu Toshiko, born January 6, 1945) is a Japanese politician of the New Komeito Party who served as a member of the House of Councillors in the Diet (national legislature) from 1992 to 2010. She was born in Taipei, Taiwan (then under Japanese administration) and graduated from Keio University in 1967. She passed the bar examination on her third attempt in 1969 and was admitted to the bar in 1972. She is currently co-managing partner of the law firm of Hamayotsu & Hamayotsu in Kojimachi, Tokyo. In 2011, she became an adjunct professor of law at Soka University.