Susan Ellen Wissler (February 23, 1853 – February 9, 1938), born Susan Ellen Frisbie, was the first female mayor in Wyoming and one of the first in the United States. Wissler was born in ; she moved to Denver at age nine, where she ultimately married and had two children. In 1890, Wissler and her family moved to Dayton, Wyoming. Wissler's husband died of tuberculosis in 1896, leaving Wissler to support her family alone; she became a local schoolteacher and later opened a millinery store.