Massachusetts - Role: Building
| Suffolk County Jail |
| Suffolk Resolves House |
| Sullivan, Edward, House |
| Sumner, Charles, House |
| Sumner, George, House |
| Superior Courthouse and Bartlett Mall |
| Sutton Block |
| Swadkins, Thomas, House |
| Swampscott Fish House |
| Swampscott Railroad Depot |
| Swan, Asie, House |
| Swan, Henry, House |
| Swansea Friends Meetinghouse and Cemetery |
| Swasey, James, House |
| Sweet, Albert, House |
| Sweetser, Daniel, House |
| Sweetser, Michael, House |
| Sweetser, Warren, House |
| Swetland-Pease House |
| Swift, D. Wheeler, House |
| Sykes House |
| Symmes, Deacon John, House |
| Symmes, Marshall, House |
| Symmes, Marshall, Tenant House |
| Symmes, Stephen, Jr., House |
| Symonds, Thomas, House |
| Symphony and Horticultural Halls |
| Symphony Hall |
| Tack Factory, The |
| Taft, Aaron, House |
| Taft, Bazaleel, Jr., House and Law Office |
| Taft Brothers Block |
| Taft, George, House |
| Taft, Hon. Bazaleel, House |
| Taft, Moses, House |
| Taft, Samuel, House |
| Taft, Zadock, House |
| Tapin, Eugene, House |
| Tapley Building |
| Tarklin School |
| Tashmoo Springs Pumping Station |
| Taunton Alms House |
| Taunton Public Library |
| Tavern Farm, Old |
| Tay, Jesse, House |
| Taylor-Bray Farm |
| Taylor-Dallin House |
| Taylor Square Firehouse |
| Teaticket School |
| Ted's Diner |
| Temple Building |
| Temple, Joseph, House |
| Temple, Mark, House |
| Tenney Homestead |
| Tenny Castle Gatehouse |
| 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 |
| Thomas, H.P., House |
| Thomas-Webster Estate |
| Thom Block |
| Thompson, Abijah, House |
| Thompson, Jacob, House |
| Thompson School |
| Thompson Street School |
| Thomson, C.R., House and Barn |
| Thomson, Elihu, House |
| Thoreau-Alcott House |
| Thorndike, Capt. John, House |
| 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 |
| Toussaint, Winand, House |
| Tower, Horatio, House |
| Towle, Loren, Estate |
| Town Diner |
| Town Farm, The |
| Town Hall |
| Townsend House |
| Townsend House |
| Town Stable |
| Train, Samuel, House |
| Travelers Club |
| Treadwell-Sparks House |
| Trinity Block |
| Trinity Church |
Data from United States Park Service and Wikidata
