Massachusetts - Area of significance: Architecture
| Melrose Public Library |
| Melrose Town Center Historic District |
| Melvin, Isaac, House |
| Memorial Drive Apartments Historic District |
| Memorial Hall |
| Memorial Hall |
| Memorial Hall, Harvard University |
| Memorial Hall Library |
| Memorial Square District |
| Memorial Town Hall |
| Mendon Center Historic District |
| Merrell Tavern |
| Merriam, Galen, House |
| Merriam, M.H. and Company |
| Merrifield House |
| Merrill Double House |
| Merrill Estate |
| Merrill's Wharf Historic District |
| Merrimack Associates Building |
| Merrimack-Middle Streets Historic District |
| Methodist Church |
| Methodist Episcopal Society of Tyringham |
| Methuen Memorial Music Hall |
| Methuen Water Works |
| Metropolitan District Commission Pumping House |
| Metropolitan District Commission Stable |
| Metropolitan State Hospital |
| Metropolitan Theatre |
| Middleborough Center Historic District |
| Middleborough Waterworks |
| Middlefield Center Historic District |
| Middlesex Fells Reservoirs Historic District |
| Miles, Charles, House |
| Milford Town Hall |
| Millard-Souther-Green House |
| Miller, Edward, House |
| Millers Falls Village Historic District |
| Millicent Library |
| Millis Center Historic District |
| Mill-Prospect Street Historic District |
| Mill River Historic District |
| Mills, Davis, House |
| Mills-Hale-Owen Blocks |
| Mills-Stebbins Villa |
| Mill Village Historic District |
| Mill Way Historic District |
| Milton-Bradley Company |
| Milton Cemetery |
| Milton Centre Historic District |
| Milton Hill Historic District |
| Minot's Ledge Light |
| Minute Man National Historical Park |
| Miss Florence Diner |
| Mission Chapel |
| Mission Hill Triangle Historic District |
| Mission House |
| Miss Toy Town Diner |
| Miss Worcester Diner |
| Mitchell, Amy B., House |
| Monadnock Road Historic District |
| Monarch Diner |
| Monroe, Bessie, House |
| Monsignor James Coyle High School |
| Monson Center Historic District |
| Monson Developmental Center |
| Montague Center Historic District |
| Montrose, The |
| Montvale |
| Montville Baptist Church |
| Monument Mills |
| Monument Park Historic District |
| Monument Square-Eagle Street Historic District |
| Monument Square Historic District |
| Monument Square Historic District |
| Monument Square Historic District |
| Moody Street Fire Station |
| Moody Street Historic District |
| Moore-Hill House |
| Moore House |
| Moore, Jesse, House |
| Moore's Corner Historic District |
| Moran Square Historic District |
| Moreland Street Historic District |
| Moreland Terrace Historic District |
| Morewood School |
| Morgan Block |
| Morse, Amos, House |
| Morse-Barber House |
| Morse, Daniel, III, House |
| Morse, Henry, House |
| Morse, H., House |
| Morse House |
| Morse, Moses, House |
| Morse-Tay-Leland-Hawes House |
| Morse, Timothy, House |
| Morton Road Historic District |
| Moseley School |
| Mossman, Col. Adelbert, House |
| Mountain Rest |
| Mount Auburn Cemetery |
Data from United States Park Service and Wikidata
