Kewaskum is a village in Washington and Fond du Lac counties in Wisconsin, United States. The population was 4,004 at the 2010 census. All of this population resided in the Washington County portion of the village. The village is mostly surrounded by the Town of Kewaskum.

Washington County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 136,761. Its county seat is West Bend. The county was created from Wisconsin Territory in 1836 and organized in 1845. It was named after President George Washington.