Third County Courthouse may refer to any of numerous courthouses that were third-built in their county, including:
Old Marengo County Courthouse, Linden, Alabama Christian County Courthouse (Illinois), Taylorville, Illinois Third St. Joseph County Courthouse, South Bend, Indiana Third Sarpy County Courthouse, Papillon, Nebraska Third County Courthouse (Staten Island), New York City, New York Clark County Courthouse (Ohio), Springfield, Ohio
See also Old Third District Courthouse, New Bedford, Massachusetts Jefferson Market Library, was Third Judicial District Courthouse, New York City, New York Second County Courthouse (disambiguation) Fourth County Courthouse (disambiguation)