Ten Sleep is a town in Washakie County, Wyoming, United States. It is located in the Bighorn Basin in the western foothills of the Bighorn Mountains, approximately 26 miles (42 km) east of Worland and 59 miles (95 km) west of Buffalo.

Washakie County is a county in the U.S. state of Wyoming. As of the 2020 United States Census, the population was 7,685. Its county seat is Worland.