The Longmire Buildings in Mount Rainier National Park comprise the park's former administrative headquarters, and are among the most prominent examples of the National Park Service Rustic style in the national park system. They comprise the Longmire Community Building of 1927, the Administration Building of 1928, and the Longmire Service Station of 1929. Together, these structures were designated National Historic Landmarks on May 28, 1987. The administration and community buildings were designed by National Park Service staff under the direction of Thomas Chalmers Vint.