The Freier Round Barn is a historic round barn in rural Jones County, South Dakota, United States. It is located on the north side of County Highway 16, northeast of Draper. It is very nearly circular, measuring 60 feet (18 m) in diameter, with 18 sash windows and four doors. The barn was built in 1918, from a pre-cut kit ordered by catalog. It is the only known example of a pre-cut wood frame barn in the state.