María G. "Chata" Sada (December 5, 1884 - July 13, 1973) was a Mexican-American businesswoman, informal educator and midwife in Boquillas Canyon. Sada ran the last store and restaurant in the Boquillas area, "Chata's Place" between 1901 and 1936. Eventually the land it stood on became part of the Big Bend National Park.