The Grand Canyon Park Operations Building was built in 1929 on the South Rim of the Grand Canyon in Grand Canyon National Park. It is significant as an example of a National Park Service building designed to blend harmoniously with the natural surroundings, in the National Park Service Rustic style. The Operations Building was designed to replace the Superintendent's Residence as the park headquarters. It was in turn replaced by a newer building in 1967, and presently functions as the headquarters for park law enforcement. The building was designed by the National Park Service Landscape Division under the direction of Thomas Chalmers Vint, and has been designated a National Historic Landmark for its design significance.