All - Constructed - 1880–1889
| Miami County Courthouse and Power Station |
| Michigan Central Depot |
| Michigan Central Railroad Depot |
| Middle Bay Light |
| Midway House |
| Miller, Alexander McVeight, House |
| Miller Brothers Department Store |
| Miller Farmstead |
| Miller House |
| Miller, H. S., Bank |
| Miller-Porter-Lacy House |
| Miller-Walker House |
| Millsaps-Buie House |
| Milton Railroad Station |
| Milwaukee Normal School-Milwaukee Girls' Trade and Technical High School |
| Mingus Mill |
| Minneapolis and St. Louis Depot |
| Minneapolis City Hall-Hennepin County Courthose |
| Minnesota State Reformatory for Men Historic District |
| Minnesota State Training School |
| Minthorn Hall |
| Missouri State Penitentiary Warden's House |
| Modjeska House |
| Moffat Library |
| Mono County Courthouse |
| Monroe Water Tower |
| Montezuma Hotel Complex |
| Montezuma Schoolhouse |
| Moore and Thompson Paper Mill Complex |
| Moore Road Stone Arch Bridge |
| Moran Building |
| Morgan-Copp-Mervau Building |
| Morgan, Daniel, Monument |
| Morgan, W. H., House |
| Morley Bridge |
| Morris Industrial School for Indians Dormitory |
| Moscow Covered Bridge |
| Moss-Johnson Farm |
| Mottman Building |
| Mountain Avenue Station |
| Mount Ebal Methodist Protestant Church |
| Mount Morris Bank |
| Moyers Buildings |
| Muchnic, H. E., House |
| Muench, Adolf, House |
| Municipal Building and Central Fire Station, 340 |
| Munro, John Manson, House |
| Murphy Grist Mill |
| Murphy, William L. and Sydney V., House |
| Music Hall |
| Narrows Bridge |
| Nash, William M., House |
| National Monument to the Forefathers |
| National Saving And Trust Company |
| National State Bank |
| National Zoological Park |
| Nation, Carry A., House |
| N-Bar Ranch |
| Neill-Turner-Lester House |
| Nelson Farm |
| Newell, George R., House |
| New Glarus Town Hall |
| New Jersey Hall |
| New Jersey Manual Training and Industrial School for Colored Youth |
| Newport Covered Bridge |
| Newton Cottage Hospital Historic District |
| New York Cancer Hospital |
| New York Life Building |
| New York Presbyterian Church |
| Niagara Reservation |
| Nichols, Frank Eugene, House |
| Nichols House |
| Nicholson House |
| Nickerson, Samuel, House |
| No. 4 Engine House |
| Norcross Brothers Granite Quarry |
| North Bennington Depot |
| North Entrance Road Historic District |
| North Street Fire Station |
| Northwestern Improvement Company Store |
| North Wisconsin Lumber Company Office |
| Norton's Corner School |
| Norumbega |
| Norumbega Carriage House |
| Nuestra Senora de Luz Church and Cemetery |
| Nutt, Adam Clarke, Mansion |
| Oberg-Metcalf House |
| Ocean City 34th Street Station |
| Oconomowoc City Hall |
| Odd Fellows Lodge and Temple |
| Odell Building |
| Offutt Covered Bridge |
| Ogilvie Building |
| Old Bayfield County Courthouse |
| Old Catholic Church |
| Old Cawker City Library |
| Old Danish Church |
| Old Delta Democrat Times Building |
| Old Fire House No. 4 |
| Old Logan County Courthouse |
Data from United States Park Service and Wikidata
