Keiko Takahashi (高橋惠子, Takahashi Keiko, born January 22, 1955 in Shibecha, Hokkaidō, Japan) is a Japanese actress. Prior to marrying director Banmei Takahashi in 1982, she went by her maiden name Keiko Sekine (関根恵子). She debuted in the 1970 film High School Student Blues, which included topless scenes of the 15-year-old actress. Her second film, おさな妻, earned her the Golden Arrow Award for Newcomer of the Year. She would perform several more nude scenes at the age of 16, in 樹氷悲歌 and Play.In 1981 she appeared in the Nikkatsu Roman Porno film Love Letter, a fictionalized account of the life of poet Mitsuharu Kaneko, which Nikkatsu hoped would appeal to both male and female audiences. In 1982 she was the female lead in her husband Banmei Takahashi's launch into mainstream film, Tattoo Ari. In 2008, she won the Mainichi Film Award for Best Supporting Actress for her work in Fumiko no Umi. She was given Mainichi's Tanaka Kinuyo Award in 2010.