Montana - Role: Building
| Lucy Building |
| Lundwall, Charles, Building |
| Lyman-Neel Residence |
| Madison Grade School |
| Madison Hotel and Cafe |
| Malmborg School |
| Manley’s General Store |
| Many Glacier Barn and Bunkhouse |
| Many Glacier Campground Camptender's Cabin |
| Marcus, Dr. Carl, House |
| Marcyes, Claude O., House |
| Margaret Block |
| Marsh and Powell Funeral Home |
| Masonic Building |
| Masonic Lodge |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple |
| Matheson, Duncan, House |
| Matt's Place Drive-In |
| Maudlow School |
| May, Albert, House |
| May, Charles, House |
| May, George, House |
| May, Harry, House |
| May, Louis, House |
| McCall, Tracy, House |
| McCarthy Homestead Cabin |
| McCarthy, Margaret, Homestead |
| McCone Residence |
| McCrossin, James, Cabin |
| McFarlane House |
| McGee House |
| McGlauflin House |
| McKinley Elementary School |
| McLaughlin, John, House |
| McMannamy House and Rental Properties |
| McMullen Hall |
| Meadowbrook Stock Farm |
| Medicine Point Lookout |
| Metcalf House |
| Methodist Church of Alberton |
| Methodist Episcopal Church |
| Methodist Episcopal Church |
| Methodist Episcopal Church and Parsonage |
| Methodist Episcopal Church of Anaconda |
| Methodist-Episcopal Church of Marysville |
| Methodist Episcopal Church South |
| Miles City Steam Laundry |
| Miles City Waterworks Building and Pumping Plant Park |
| Miles, George M., House |
| Miller, J. K., Homestead |
| Mill House |
| Milwaukee Depot |
| Milwaukee Road Railroad Substation No. 10 |
| Mineral Peak Lookout |
| Miners Union Hall |
| Missoula County Courthouse |
| Missoula Laundry Company |
| Missoula Mercantile |
| Missoula Mercantile Warehouse |
| Model Laundry and Apartments |
| Modern Hotel |
| Moncure Tipi |
| Montana Aeronautics Commission Operations Historic District |
| Montana Deaf and Dumb Asylum |
| Montana National Bank |
| Montana State Arsenal, Armory and Drill Hall |
| Montana State Capitol Building |
| Montana State Normal School |
| Montana Veterans and Pioneers Memorial Building |
| Montana, Wyoming and Southern Railroad Depot |
| Montgomery Ward |
| Morr, Philip and Ella, House |
| Moss, Preston B., House |
| Mountain States Telephone and Telegraph Company |
| Mount Brown Fire Lookout |
| Mrs. Lydia McCaffery's Furnished Rooms |
| Murphy, John T., House |
| N-Bar Ranch |
| Neihart School |
| New Brunswick House, The |
| Newman House |
| Norby House |
| North, Austin, House |
| Northeast Entrance Station |
| Northern Hotel |
| Northern Montana College Girls Residence Hall |
| Northern Pacific Railroad Depot |
| Northern Pacific Railroad Depot-Fromberg |
| Northern Pacific Railroad Settling Tanks |
| Northern Pacific Railway Depot |
| Northern Pacific Warehouse |
| Northside School |
| Norton, W. H., House |
| Norwegian Evangelical Lutheran Church and Parsonage |
| Numa Ridge Fire Lookout |
| Nutting Rental |
| O'Brien, William, House |
| O'Donnell, I. D., House |
Data from United States Park Service and Wikidata
