Dudley is an unincorporated community and census-designated place (CDP) in Fall River County, South Dakota, United States.

It is in the western part of the county, 1 mile (1.6 km) northeast of Edgemont.

It is bordered to the west by the BNSF Railway and to the north by an abandoned line of the Burlington Northern Railroad, now part of the George S. Mickelson Trail.

U.S. Route 18 passes just north of Dudley, leading northeast 23 miles (37 km) to Hot Springs and west the same distance to Mule Creek Junction, Wyoming.

This South Dakota state location article is a stub.