All - Constructed - 1910–1919
| St. Petersburg Woman's Club |
| St. Peters Church |
| St. Philip's Church |
| St. Pierre, Edward W., House |
| Strand Hotel |
| St. Regis Mountain Fire Observation Station |
| Stribley, Charles W., House |
| Strong, Alice Henderson, House |
| Strong City Atchison, Topeka, & Santa Fe Depot |
| Strong Hall |
| St. Stanislaus Bishop and Martyr Roman Catholic Parish Complex |
| St. Theodosius Russian Orthodox Cathedral |
| St. Theresa's Catholic Church |
| St. Thomas Church and Parish House |
| Stubbs-Ballah House |
| St. Vincent de Paul Catholic Church |
| St. Vincent de Paul School |
| Subira House |
| Sullivan, James J., House |
| Sully County Courthouse |
| Summerfield Street Row Historic District |
| Summerville Depot |
| Summit Apartment Building |
| Sump Barn |
| Sunset Beach Hotel |
| Superior Entry South Breakwater Light |
| Supreme Court and Library Building |
| Surety Building |
| SURPRISE (schooner) |
| Sutherland State Aid Bridge |
| Swartz Printing Company Building |
| Swetman House |
| Swift, Louis F., House |
| Tallahatchie County Second District Courthouse |
| Tamassee DAR School |
| Tampa City Hall |
| Tappan Zee Playhouse |
| Tate Arms |
| Taylor County Courthouse |
| Taylor, Dr. W.R. and Eunice, House |
| Tazewell County Courthouse |
| Technical High School |
| Telluride House |
| Tempe Concrete Arch Highway Bridge |
| Ten Chimneys |
| Terminal Station |
| Texas Oil Company |
| The Frick Collection and Frick Art Reference Library Building |
| Third Street Motor Car Company Building |
| Thomas Drugs |
| Thomasville Depot |
| Thompson, Charles, Memorial Hall |
| Thompson, Sen. William H., House |
| Thorn House |
| Thorpe Ford Bridge |
| Thrasher's Opera House |
| Threatt Filling Station |
| Tichner, Abraham, House |
| Tifereth Israel Synagogue |
| Tiffany, George S., Cottage |
| Tinga Nursery |
| Tinlinn Apartments |
| Tobin House |
| Todd Historic District |
| Toledo Club |
| Toltec Lodge |
| Tomah Public Library |
| Tooele Valley Railroad Complex |
| Topsmead |
| Tourist Hotel |
| Tousey, Benjamin C., House |
| Tracy Memorial Village Hall Complex |
| Trail School, Old |
| Treadway, Townsend G., House |
| Tremont Baptist Church |
| Trident School |
| Triune Masonic Temple |
| Truck Line Bridge No. 1 |
| Tucker, Garland Scott and Toler Moore, House |
| Tudor Manor |
| Tulsa Municipal Building |
| Tunkhannock Viaduct |
| Tuolumne Meadows High Sierra Camp |
| Turkey Run State Park |
| Turner, J.L. and Son, Building |
| Turner, John E., House |
| Twin Sisters Lookout |
| Twin Towers |
| Twohy Building |
| Tyree Building |
| Uehling, Frank, Barn |
| Uihlein, Herman, House |
| Ulmer, J. W., House |
| Ulster and Delaware Railroad Station |
| Union Auto Company |
| Union Cemetery Gardener's Cottage |
| Union Community Hospital |
| Union Depot Hotel, Old |
| Union High Academy Historic District |
| Union Hotel |
Data from United States Park Service and Wikidata
