All - Constructed - 1870–1879
| Martin, Sarah, House |
| Martin, S. F., House |
| Martinsville Road Covered Bridge |
| Mary McLeod Bethune Council House National Historic Site |
| Masonboro Sound Historic District |
| Massasoit Fire House No. 5 |
| Massillon Cemetery Building |
| Matawan Station |
| Maywood Railroad Station |
| Mazomanie Town Hall |
| McCarthy House |
| McConnell's Mill Covered Bridge |
| McCoy Farmstead |
| McDonald Mansion |
| McGilvery, Capt. John, House |
| McGilvery, Capt. William, House |
| McGregor, Walker, Farmstead |
| McLean, Henry, House |
| McMillan, David, House |
| McWaid, Job A. and Rebecca E., House |
| Mecca Bridge |
| Mechanics Engine House No. 4 |
| Mecklenburg's Garden |
| Medano Ranch Headquarters |
| Medora Covered Bridge |
| Memorial Hall |
| Memorial Hall Library |
| Merrimon-Wynne House |
| Messer Barn |
| Methodist Episcopal Church |
| Metropolitan Museum of Art |
| Miller, Harmon, House |
| Miller, Lewis, House |
| Miller School of Albemarle |
| Millington Station |
| Mill-Pine Neighborhood Historic District (Boundary Decrease) |
| Mills House |
| Millville Cemetery |
| Milwaukee Pierhead Light |
| Miner House |
| Minnesota Boat Club Boathouse on Raspberry Island |
| Mispillion Lighthouse and Beacon Tower |
| Mission Inn |
| Mississippi Mills Packing and Shipping Rooms |
| Mitchell Building |
| Moe, Bergetta, Bakery |
| Monroe Residential Historic District |
| Montana State Fairgrounds Racetrack |
| Montville Schoolhouse |
| Moore's Auto Body and Paint Shop |
| Morrill, Charles H., Homestead |
| Morris High School Historic District |
| Morse, LeGrand, House |
| Mount Auburn Cemetery |
| Mount Auburn Cemetery Reception House |
| Mount Pleasant School |
| Mount Zion Covered Bridge |
| Moye Boarding House |
| Mt. Airy Station |
| Mud River Covered Bridge |
| Murdock, Sabin S., House |
| Murray, George, House |
| Music Hall |
| Nachtrieb-Kelly Ranch |
| Naeset, Jens, House |
| Napa Opera House |
| Narragansett Mills |
| Nash, Dr., House |
| National Home for Destitute Colored Women and Children |
| Navigation Structures at South Haven Harbor, Michigan |
| Needham Street Bridge |
| Newark Passenger Station |
| Newberry College Historic District |
| Newburyport Harbor Front Range Light |
| Newburyport Harbor Rear Range Light |
| Newington Railroad Depot |
| Newton, A., Farm |
| Newton Street Bridge |
| New York Bible Society |
| Nichols House |
| Nichols, Samuel, House |
| Niewerth Building |
| Niles, Rial A., House |
| No. 8 Thomas Street Building |
| Noble, Alexander, House |
| Nobles, Dr. A. B., House and McKendree Church |
| North Conway Depot and Railroad Yard |
| North Manchester Covered Bridge |
| North New Town Historic District |
| North Point Water Tower |
| North Wells Street Historic District |
| Notre Dame Church and Goldsmith Memorial Chapel |
| Nottawa Stone School |
| Nott Street School |
| Oaklands, The |
| Oddfellows Building |
| Ohio Farm Bureau Federation Offices |
| Ohlman-Shannon House |
| Olana |
| Old Bakery |
Data from United States Park Service and Wikidata
