Massachusetts - Criteria: A (event)
| Tiffany-Leonard House |
| Times and Olympia Buildings |
| Tisza, Vera and Laszlo, House |
| Tobey, Josiah, House |
| Tolman-Gay House |
| Topsfield Town Common District |
| Torpedo Boat PT-617 |
| Town Brook Historic and Archeological District |
| Town Diner |
| Towne Farm |
| Towne Street Historic District |
| Town Farm, The |
| Town Hall |
| Town Hill District |
| Town Stable |
| Tremont Street Subway |
| Trinity Block |
| Trinity Episcopal Church |
| Trinity Episcopal Church |
| Trinity Neighborhood House |
| Troupes, John, Three-Decker |
| Truesdale Hospital |
| Truman Parkway-Metropolitan Park System of Greater Boston |
| Truro Highlands Historic District |
| Tucker Farm Historic District |
| Tufts, Peter and Oliver, House |
| Turner Falls Historic District |
| Tuttle Square School |
| Twinehurst American Optical Company Neighborhood |
| Twin Lights Historic District-Cape Ann Light Station |
| Two Brothers Rocks-Dudley Road Historic District |
| Tyler, Frank J., House |
| Tyler Park Historic District |
| Tyng, Col. Jonathan, House |
| Tyringham Cemetery |
| Tyringham Library |
| Tyringham Shaker Settlement Historic District |
| Union Baptist Church |
| Union Chapel |
| Union Congregational Church |
| Union Hall |
| Union Mills |
| Union Mission Chapel-Historical Hall |
| Union Oyster House |
| Union Railway Car Barn |
| Union Station |
| Union Station |
| Union Station |
| Union Station |
| Union Street Historic District |
| Union Street Railway Carbarn, Repair Shop |
| Union Trust Company Building |
| Union Wharf |
| Unitarian Society, The |
| United Electric Co. Building |
| United Shoe Machinery Corporation Building |
| United Shoe Machinery Corporation Clubhouse |
| United State Post Office, Courthouse, and Federal Building |
| United States Watch Company |
| United States Whip Company Complex |
| Universalist Society Meetinghouse |
| University Museum |
| Upham's Corner Market |
| Upper Historic District |
| Upper Main Street Historic District |
| Upper North Street Commercial District |
| Upper Worthington Historic District |
| Upsala Street School |
| Upton Center Historic District |
| Upton Town Hall |
| Urban Rowhouse |
| Urban Rowhouse |
| US Customhouse |
| U.S. Customshouse |
| US Post Office-Arlington Main |
| US Post Office-Attleboro Main |
| US Post Office-Lynn Main |
| US Post Office-Medford Main |
| US Post Office-Middleborough Main |
| US Post Office-Millbury Main |
| US Post Office-Provincetown Main |
| US Post Office-Taunton Main |
| US Post Office-Wakefield Main |
| US Post Office-Weymouth Landing |
| US Post Office-Whitinsville Main |
| US Post Office-Winchester Main |
| US Post Office-Woburn Center Station |
| USS CASSIN YOUNG (destroyer) |
| U.S.S. CONSTITUTION |
| U.S.S. JOSEPH P. KENNEDY JR. (DD-850) |
| USS LIONFISH (SS0298) National Historic Landmark |
| USS MASSACHUSETTS (BB-59) National Historic Landmark |
| Uxbridge Common District |
| Uxbridge Passenger Depot |
| Uxbridge Town Hall |
| Vamp Building |
| Vanderhoop, Edwin DeVries, Homestead |
| Van Deusen, H. M., Whip Company |
| Varnum Building |
| Varnum School |
Data from United States Park Service and Wikidata
