New York - Criteria: C (architecture/engineering)
| Trinity Methodist Episcopal Church and Rectory |
| Trinity-St. Paul's Episcopal Church |
| Tripp House and Store Complex |
| Troy Gas Light Company |
| Troy Public Library |
| Troy Savings Bank and Music Hall |
| Troy Waste Manufacturing Company Building |
| Trudeau Sanatorium |
| Trumbull, John H. and Sarah, House |
| Trumpbour Homestead Farm |
| Truxton Depot |
| Tryon, Frank and Eliza, House |
| Tuckahoe High School |
| Tunnicliff-Jordan House |
| Turner Brothers' Building-American Household Storage Company |
| Turtle House |
| Tusten Stone Arch Bridge |
| Tuthill, David, Farmstead |
| Tuthill-Green House |
| Tuthill, Jesse and Ira, House |
| Tuthill-Lapham House |
| Tuthilltown Gristmill |
| Tuttle, Newman, House |
| Tuxedo Park |
| Tuxedo Park Railroad Station |
| Tweddle Farmstead |
| Tweed Courthouse |
| Twentythird Regiment Armory |
| Twilight Park Historic District |
| Tyron, Augustus S., House |
| Ulster and Delaware Railroad Depot and Mill Complex |
| Ulster and Delaware Railroad Station |
| Ulster Heights Synagogue |
| Ulster House Hotel |
| Unadilla Forks School |
| Unadilla Village Historic District |
| Unadilla Waterworks |
| Underhill-Acker House |
| Underhill, George, House |
| Union and State Streets Historic District |
| Union Avenue Historic District |
| Union Block |
| Union Chapel |
| Union Chapel |
| Union Chapel |
| Union Church of Pocantico Hills |
| Union Free School |
| Union Free School |
| Union Hall |
| Union Hall |
| Union Hotel |
| Union Meeting House |
| Union Mill Complex |
| Union Presbyterian Church |
| Union Savings Bank |
| Union Station |
| Union Station |
| Union Station |
| Union Street-Academy Hill Historic District |
| Union Street Historic District |
| Union Street Historic District |
| Union Temple of Brooklyn |
| Union Theological Seminary |
| Union Valley Congregational Church |
| Unitarian Universalist Church |
| United Charities Building Complex |
| United Church of Canastota |
| United Congregational Church of Irondequoit |
| United Methodist Church |
| United Methodist Church |
| United Methodist Church |
| United Methodist Church |
| United Methodist Church and Parsonage |
| United Office Building |
| United Presbyterian Church |
| United Presbyterian Church of Davenport |
| United Stated Merchant Marine Academy |
| United States Appraisers Store |
| United States Lace Curtain Mills |
| United States Oval Historic District |
| United Traction Company Building |
| United Waste Manufacturing Company Building |
| United Workers Cooperatives |
| University Club |
| University Club |
| University Club of Albany, The |
| University Park Historic District |
| University Presbyterian Church |
| Untermyer Park |
| Upenough |
| Upland Lawn |
| Uplands, The |
| Upper Middleburgh Cemetery |
| Upper-Mill Street Historic District |
| Upper Nyack Firehouse |
| Upperville Meeting House |
| Upsilon Alpha Chapter House |
| URGER (canal tugboat) |
| U.S. Army Military Ocean Terminal |
| US Courthouse |
Data from United States Park Service and Wikidata
