Edwina Adaha Cochrane Benner (August 1, 1885 – May 14, 1955) was the mayor of Sunnyvale, California, from 1924 to 1926 and again from 1937 to 1938. She served as councilmember from 1920 until 1948. Commonly described as the first female mayor in California, she was actually the second, after of Sawtelle, California—though Sawtelle had already been annexed by the city of Los Angeles by the time Benner was appointed mayor.