Renate Kasché (also credited as Renate Kasche, born January 1, 1945) is a German actress.

She began her career at a young age with small roles in film and television, including the character Ruth Wegener in the TV series Alle meine Tiere, where she appeared alongside Gustav Knuth. She gained wider recognition through the popular Lausbubengeschichten films based on stories by Ludwig Thoma, playing the sister of the main character portrayed by Hansi Kraus.

With Ehepaar sucht gleichgesinntes (1969), Kasché entered the erotic film genre and subsequently appeared frequently in German and international sex and exploitation films throughout the late 1960s and 1970s. Her work from this period includes titles such as Josefine Mutzenbacher, Lady Frankenstein, and several entries in the Liebesgrüße aus der Lederhose series.