Shadehill is an unincorporated community in Perkins County, in the U.S. state of South Dakota.
Shadehill was founded in 1916. A post office called Shadehill was established in 1918, and remained in operation until 1965.
Shadehill Dam and Shadehill Reservoir, completed in 1951, are near the town site.
Coordinates: 45°45′56″N 102°10′46″W / 45.76556°N 102.17944°W