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.