Michael Kieran Reilly (July 15, 1869 – October 14, 1944), was a U.S. representative from Wisconsin.Reilly was born in the town of Empire, Wisconsin in Fond du Lac County, Wisconsin on July 15, 1869. He graduated from what is today, the University of Wisconsin–Oshkosh in 1889 and earned his law degree from the University of Wisconsin–Madison in 1894. He served as Fond du Lac County district attorney for two years (1899–1900) and city attorney of Fond du Lac from 1905–1910.