Michael P. Walsh (August 25, 1838 - April 2, 1919) was an American printer and labor union activist from Milwaukee, Wisconsin who held various local elected offices, as well as serving two terms as a member of the Wisconsin State Assembly from Milwaukee, initially as the nominee of the Milwaukee Trades Assembly, a labor federation which was also an antecedent to that state's Union Labor Party; but then was re-elected as a Democrat.[1]