Edwin A. Seibel (January 9, 1902 – September 9, 1957) was an American journalist, activist, legislator, executive director of the Holyoke Taxpayers' Association, member of the Massachusetts House of Representatives, and the 34th mayor of Holyoke, Massachusetts. Between his unorthodox lack of political allies, nomination by both Democratic and Republican parties in the same election, management style, and tenure as both a state representative and mayor concurrently, Seibel was described posthumously by a columnist for the Boston Traveller as “the most controversial mayor in Holyoke’s history”. During his tenure, Seibel oversaw the reduction in size of the Board of Alderman, a predecessor of the city council from 27 to 11 members.