William Louis Fiesinger (born October 25, 1877) was a Democratic member of the United States House of Representatives from Ohio. He represented Ohio’s 13th Congressional District and is recorded as a historical member of Congress. His service in the U.S. House began on December 7, 1931, and concluded on January 3, 1937, spanning three terms in office.

During his tenure, Fiesinger served as a Representative for Ohio in the early 1930s, a period marked by significant national political and economic developments. He held office as a Democrat and completed three consecutive terms before leaving Congress. After January 3, 1937, he is noted as a former officeholder, and no further official roles, committee assignments, or contact details are listed in the available record.