District of Columbia - Significance region: Local
| Social Security Administration Building |
| Southeast Branch Library |
| Southern Railway Building |
| Square 1500 |
| Standard Material Company-Gyro Motor Company |
| St. Joseph’s Seminary |
| Stockton Hall |
| Stone, Robert and Lillie May, House |
| St. Paul's College |
| Strand Theater |
| Strong, Hattie M., Residence Hall |
| Tabard Inn |
| Terminal Refrigerating and Warehouse Company |
| Texas Gardens Apartments |
| The Furies Collective |
| Third Baptist Church |
| Tilden Hall |
| Town Center East |
| Trinity Towers |
| Truck Company F |
| Truck House No. 13 |
| Twin Oaks Playground and Field House |
| Uline Ice Company Plant and Arena Complex |
| Union Market Historic District |
| United Mine Workers of America |
| University Club of Washington, DC |
| Uptown Theatre |
| U.S. Civil Service Commission Building |
| US Courthouse-District of Columbia |
| US Department of Agriculture South Building |
| US Public Health Service Building |
| Van View |
| Virginia Interlocking Control Tower |
| Walde-Carter House |
| Wardman Flats |
| Wardman Park Annex and Arcade |
| Washington and Georgetown Railroad Car House |
| Washington Animal Rescue League Animal Shelter |
| Washington Canoe Club |
| Washington Heights Historic District |
| Washington, Margaret Murray, School |
| Washington Railway and Electric Company Garage |
| Washington Yacht Club |
| Webster, Marjorie, Junior College Historic District |
| Westory Building |
| Wetzel, Margaret, House |
| Wheatley, Phyllis, YWCA |
| Wilson, James Ormand, Normal School |
| Wire Building |
| Woodhull, Maxwell, House |
| Yale Steam Laundry |
| Young, Browne, Phelps and Springarn Educational Campus Historic District |
| Youth Pride, Inc. (aka Pride, Inc.) |
Data from United States Park Service and Wikidata
