Massachusetts - Significance region: Local
| Mills, Davis, House |
| Mills-Hale-Owen Blocks |
| Mill Village Historic District |
| Milton-Bradley Company |
| Milton Cemetery |
| Milton Centre Historic District |
| Milton Hill Historic District |
| Mission Hill Triangle Historic District |
| Miss Worcester Diner |
| Mitchell, Amy B., House |
| Monadnock Road Historic District |
| Monsignor James Coyle High School |
| Monson Center Historic District |
| Montague Center Historic District |
| Montville Baptist Church |
| Monument Mills |
| Monument Park Historic District |
| Monument Square-Eagle Street Historic District |
| Monument Square Historic District |
| Monument Square Historic District |
| Moody Street Fire Station |
| Moody Street Historic District |
| Moore-Hill House |
| Moore House |
| Moore's Corner Historic District |
| Moore State Park 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 |
| Morton Road Historic District |
| Moseley School |
| Mossman, Col. Adelbert, House |
| Mother Brook Lower Mill Pond Historic District |
| Mountain Rest |
| Mount Auburn Cemetery Reception House |
| Mount Feake Cemetery |
| Mount Hope Cemetery |
| Mount Pleasant Cemetery |
| Mount Pleasant Historic District |
| Mount Vernon Cemetery |
| Mount Wollaston Cemetery |
| Mowers' Block |
| Mt. Prospect School for Boys |
| Mt. Vernon Street Historic District |
| Municipal Group Historic District |
| Munroe Building |
| Munroe, Robert, House |
| Munroe, Sarah, Three-Decker |
| Munroe Street Historic District |
| Murdock School |
| Murphy, Patrick, Three-Decker |
| Murray, Robert, House |
| Musketaquid Mills |
| Muttock Historic and Archeological District |
| Myrtle Street School |
| Mystic Water Works |
| Nahant Civic Historic District |
| Nashawannuck Mills Historic District |
| Nathan Warnick Apartments |
| Natick Center Historic District |
| National Monument to the Forefathers |
| Nazing Court Apartments |
| Neck of Land Cemetery |
| Needham Town Hall Historic District |
| Nelson, Christina, Three-Decker |
| Nelson, John R., House |
| Neponset Valley Parkway, Metorpolitan Park System of Greater Boston |
| Nevins, Henry C., Home for Aged and Incurables |
| Nevins Memorial Library |
| New Bedford Gas and Edison Light Complex |
| New Boston Inn |
| New Boston Village Historic District |
| Newbury Historic District |
| Newcomb, John, House |
| Newcomb Place |
| Newell Farm |
| New England Telephone and Telegraph Engineering Office |
| New England Telephone Building |
| Newhall, Lucian, House |
| New Marlborough Village |
| New Riding Club |
| New Salem Common Historic District |
| Newspaper Row |
| Newton, Azariah, House |
| Newton Centre Branch Library |
| Newton City Hall and War Memorial |
| Newton Cottage Hospital Historic District |
| Newton, Edward B., School |
| Newton, S.D., House |
| Newton Street Bridge |
Data from United States Park Service and Wikidata
