Massachusetts - Area of significance: Community Planning
| Bowditch, William Ingersoll, House |
| Bowers School |
| Boxborough Old Town Center |
| Braddock, Edward, House |
| Bradford, Captain Daniel, House |
| Bradford, Capt. Gershom, House |
| Bradford House |
| Brae-Burn Historic District |
| Brande House |
| Brandeis University President's House |
| Breakheart Reservation Parkways-Metropolitan Park System of Greater Boston |
| Brewster Old King's Highway Historic District |
| Bridge Street Neck Historic District |
| Brigham Cemetery |
| Brigham House |
| Brighton Center Historic District |
| Brightside Apartments |
| Brimfield Center Historic District |
| Brine, George, House |
| Broadway Winter Hill Congregational Church |
| Brockton Edison Electric Illuminating Company Power Station |
| Brookfield Cemetery |
| Brookfield Common Historic District |
| Brookside Historic District |
| Brooks, James H., House |
| Brown-Hodgkinson House |
| Brown, John, IV, House |
| Brown-Maynard House |
| Brow's Tavern |
| Bruner, Mayall, House |
| Brush Hill Historic District |
| Buck's Corner Historic District |
| Building at 1-7 Moscow Street |
| Building at 202-204 Charles Street |
| Building at 30-34 Station Street |
| Building at 8-22 Graves Avenue |
| Buildings at 24-30 Summer St. |
| Buildings at 825-829 Blue Hill Avenue |
| Bulfinch Triangle Historic District |
| Bullard House |
| Bullen-Stratton-Cozzen House |
| Bunker Hill School |
| Burgess, Charles H., House |
| Burgin, Clarence, House |
| Buttonwood Park Historic District |
| Buttrick, Francis, House |
| Buttrick, Francis, Library |
| Byam, Charles, House |
| Cabotville Common Historic District |
| Cadman-White-Handy House |
| Calf Pasture Pumping Station Complex |
| Calhoun, Apartments, The |
| Cambridge Home for the Aged and Infirm |
| Cambridge Street Firehouse |
| Cambridge Street School |
| Camden Street Development Historic District |
| Camp Kiwanee Historic District |
| Canton Corner Historic District |
| Capron, George, House |
| Carlson, Eric, Three-Decker |
| Carreau Block |
| Carr-Jeeves House |
| Case's Corner Historic District |
| Castle Street Row |
| Cathedral of St. George Historic District |
| Center Cemetery |
| Center School |
| Central Fire Station |
| Central Fire Station |
| Central Library |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Street Historic District |
| Chapin School |
| Charles River Basin Historic District |
| Charles River Reservation Parkways |
| Charles River Reservation (Speedway)-Upper Basin Headquarters |
| Charles Street Workers' Housing Historic District |
| Charlestown Heights |
| Charlton Center Historic District |
| Chelsea Garden Cemetery |
| Cheshire Town Hall Complex |
| Chester Center Historic District |
| Chester Factory Village Historic District |
| Chesterfield Center Historic District |
| Chestnut Hill Historic Distric |
| Chestnut Hill Reservoir Historic District |
| Childs, Webster, House |
| Christ Church Burial Ground |
| Christ Episcopal Church |
| Church-Lafayette Streets Historic District |
| Church Street Historic District |
| Church Street Historic District |
| Church Street Historic District |
| Church, William L., House |
| City Stable and Garage |
| Clapp, George, House |
Data from United States Park Service and Wikidata