Mary L. Wiseman (born November 17, 1961) is an American lawyer and judge from the state of Ohio. On October 22 2007, Governor Ted Strickland appointed her to the Montgomery County Court of Common Pleas. Montgomery County, home to Dayton, is Ohio's fourth largest county with a population of 559,062 according to the 2000 census. Wiseman received her bachelor's degree from Ball State University and her law degree from the University of Arkansas at Little Rock. She is a member of the Ohio State Bar Association and American Bar Association.