Gnadenhutten is a village located on the Tuscarawas River in Tuscarawas County, Ohio, United States. The population was 1,240 at the 2020 census. It is Ohio's oldest existing settlement, being founded by Moravian Christians in 1772 and was the site of the Gnadenhutten massacre during the American Revolutionary War. It is part of the New Philadelphia–Dover micropolitan area.