Massachusetts - Area of significance: Architecture
| Templeton Farm Colony |
| Tenney Homestead |
| Tenny Castle Gatehouse |
| Ten Pound Island Light |
| Tewksbury State Hospital |
| Textile District |
| Thane Street Historic District |
| Thaxter, Celia, House |
| Thayer, Benjamin, House |
| Thayer, Gen. Sylvanus, House |
| Thayer House |
| Thayer, Nathaniel, Estate |
| Thayer Public Library |
| Theodore Parker Unitarian Universalist Church |
| Third Meetinghouse |
| Third Railroad Station |
| Third Street Commercial Corridor Historic District |
| Thomas, H.P., House |
| Thomas-Webster Estate |
| Thom Block |
| Thompson, Abijah, House |
| Thompson School |
| Thompson Street School |
| Thomson, C.R., House and Barn |
| Thorndike, Capt. John, House |
| Three Sisters of Nauset (Twin Lights) |
| Thule-Plummer Buildings |
| Thumb, Tom, House |
| Tiffany-Leonard House |
| Tilton, D. Horace, House |
| Times and Olympia Buildings |
| Tisdale-Morse House |
| Tisza, Vera and Laszlo, House |
| Titcomb, Benaiah, House |
| Tobey Homestead |
| Tobey, Josiah, House |
| Tolman-Gay House |
| Topsfield Town Common District |
| Torpedo Boat PT-617 |
| Toussaint, Winand, House |
| Tower, Horatio, House |
| Towle, Loren, Estate |
| Town Brook Historic and Archeological District |
| Town Diner |
| Towne Farm |
| Towne Street Historic District |
| Town Farm, The |
| Town Hall |
| Town Hall Square Historic District |
| Town Hill District |
| Townsend House |
| Townsend House |
| Town Stable |
| Train, Samuel, House |
| Treadwell-Sparks House |
| Tremont Nail Factory District |
| Trinity Block |
| Trinity Church |
| Trinity Episcopal Church |
| Trinity Episcopal Church |
| Trinity Neighborhood House |
| Trinity Rectory |
| Troupes, John, Three-Decker |
| Trowbridge-Badger House |
| Truesdale Hospital |
| Truro Highlands Historic District |
| Tucker, Dr. Harrison A., Cottage |
| Tucker Farm Historic District |
| Tuckerman, William F., House |
| Tufts, Peter and Oliver, House |
| Tufts, Peter, House |
| Tufts, Rev. John, House |
| Turnbull, R.P., House |
| Turner Falls Historic District |
| Turner Hill |
| Turner, Stephen, House |
| Turnpike House |
| Tuttle Square School |
| Twinehurst American Optical Company Neighborhood |
| Twitchell, Ginery, House |
| Twitchell, Joseph, House |
| Two Brothers Rocks-Dudley Road Historic District |
| Tyler, Frank J., House |
| Tyler Park Historic District |
| Tyng, Col. Jonathan, House |
| Tyringham Center School |
| Tyringham Library |
| Tyringham Shaker Settlement Historic District |
| Union Baptist Church |
| Union Chapel |
| Union Congregational Church |
| Union Congregational Church |
| Union Congregational Church |
| Union Hall |
| Union Mills |
| Union Mission Chapel-Historical Hall |
| Union Oyster House |
| Union Station |
| Union Station |
| Union Station |
Data from United States Park Service and Wikidata
