威斯康辛州（英语：State of Wisconsin）是美国中北部的一个州，紧临五大湖区。该州的西边为明尼苏达州，西南边为爱荷华州，南边为伊利诺州，东边为密西根湖，东北边为密西根上半岛，北边为苏必略湖。威斯康辛州面积在全美各州排名第23，人口则排名第20。州政府位于麦迪逊，最大城市则为密西根湖西岸的密尔瓦基。美国2012年人口估算显示，该州人口为572.6万。

全州共设有72个郡,请详见:威斯康星州行政区划。

州名来源于法语对某印第安地名的音译，意为“我们居住的地方”。

Wisconsin (/wɪsˈkɒnsɪn/) is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin is the 23rd largest state by total area and the 20th most populous. The state capital is Madison, and its largest city is Milwaukee, which is located on the western shore of Lake Michigan. The state is divided into 72 counties.