The Manitowoc County Courthouse is a three-story domed courthouse located in Manitowoc, Wisconsin. It houses the circuit court and government offices of Manitowoc County, Wisconsin. The building was listed on the National Register of Historic Places in 1981 and on the State Register of Historic Places in 1989 for its significance as a local example of Beaux-Arts and Neoclassical architecture. The courthouse is located in the Eighth Street Historic District.