District of Columbia - Area of significance: Social History
| Simpson's, Billy, House of Seafood and Steaks |
| Sixteenth Street Historic District |
| Southern Aid Society-Dunbar Theater Building |
| Steedman-Ray House |
| St. Elizabeths Hospital |
| Stevens, Thaddeus, School |
| St. Luke's Episcopal Church |
| Strand Theater |
| Studio House |
| Sumner, Charles, School |
| Syphax, William, School |
| Tabard Inn |
| Terrell, Mary Church, House |
| Texas Gardens Apartments |
| The Furies Collective |
| Theodore Roosevelt Island National Memorial |
| True Reformer Building |
| Twin Oaks |
| Twin Oaks Playground and Field House |
| United Mine Workers of America |
| United States Daughters of 1812, National Headquarters |
| University Club of Washington, DC |
| Vigilant Firehouse |
| Walsh Stable |
| Wardman Park Annex and Arcade |
| Washington Animal Rescue League Animal Shelter |
| Watterston House |
| Wheatley, Phyllis, YWCA |
| Willard Hotel |
| Woodlawn Cemetery |
| Wyoming Apartments |
| Youth Pride, Inc. (aka Pride, Inc.) |
Data from United States Park Service and Wikidata
