Soledad Estorach Esterri (6 February 1915, in Albatàrrec, Segrià, Spain – 14 March 1993, in Paris, France) was a Catalan anarcha-feminist. She created the Institut Mujeres Libres and Casal de la Dona Treballadora.[1] She contributed to the papers Tierra y Libertad and Mujeres Libres as well as a book which was collectively written, Mujeres Libres.[2]