Montana - Criteria: A (event)
| Matt's Place Drive-In |
| McCall, Tracy, House |
| McCart Fire Lookout |
| McCarthy Homestead Cabin |
| McCormick's Livery and Feed Stable Sign |
| McMullen Hall |
| Meadowbrook Stock Farm |
| Medicine Point Lookout |
| Merrill Avenue Historic District |
| Methodist Episcopal Church |
| Methodist Episcopal Church |
| Methodist Episcopal Church and Parsonage |
| Methodist Episcopal Church of Anaconda |
| Miller, J. K., Homestead |
| Mill House |
| Milwaukee Depot |
| Milwaukee Road Historic District |
| Mineral Peak Lookout |
| Miners Union Hall |
| MISCO Grain Elevator |
| Missoula Downtown Historic District |
| Missoula Mercantile Warehouse |
| Missouri River Bridge |
| Modern Hotel |
| Moncure Tipi |
| Montana Deaf and Dumb Asylum |
| Montana State Arsenal, Armory and Drill Hall |
| Montana State Capitol Building |
| Montana State Fairgrounds Racetrack |
| Montana State Training School Historic District |
| Montana State University Historic District |
| Montana Territorial and State Prison |
| Montana Veterans and Pioneers Memorial Building |
| Montana, Wyoming and Southern Railroad Depot |
| Montgomery Ward |
| Morel Bridge |
| MORNING EAGLE (carvel-planked wooden vessel) |
| Mossman Overpass |
| Mountain States Telephone and Telegraph Company |
| Mount Brown Fire Lookout |
| Mrs. Lydia McCaffery's Furnished Rooms |
| Murphy, John T., House |
| Natural Pier Bridge |
| N-Bar Ranch |
| Neihart School |
| New Brunswick House, The |
| North Entrance Road Historic District |
| Northern Hotel |
| Northern Montana State Fairground Historic District |
| Northern Pacific Railroad Completion Site, 1883 |
| Northern Pacific Railroad Depot |
| Northern Pacific Railroad Depot-Fromberg |
| Northern Pacific Railroad Settling Tanks |
| Northern Pacific Railway Depot |
| Northern Pacific Warehouse |
| North Fork Road |
| Northside School |
| Norton, W. H., House |
| Numa Ridge Fire Lookout |
| Olive Hotel |
| Oliver Building |
| O'Neil Lumber Company Office |
| Orange Street Tunnel |
| Oregon Short Line Passenger Depot |
| OTO Homestead and Dude Ranch |
| Outlook Depot |
| Palace Hotel |
| Parberry Block East |
| Parmly Billings Memorial Library |
| Pass Creek School |
| Pass Creek Snowshoe Cabin |
| Peoples' Congregational Church |
| Philipsburg Historic District |
| Phillips County Carnegie Library |
| Pictograph Cave |
| Pine Apartments |
| Pine Butte School |
| Point of Rocks Historic Transportaion Corridor |
| Polebridge Ranger Station Historic District |
| Polebridge to Numa Ridge Phoneline |
| Polson Feed Mill |
| Pompey's Pillar |
| Pope, Francis and Hannah, House |
| Popham Ranch |
| Porter Flats Apartments |
| Powder House |
| Powder River Bridge |
| Prescott Commons |
| Ptarmigan Tunnel |
| Quartz Lake Patrol Cabin |
| Raftery, William, Homestead |
| Railroad Depot |
| Rainbow Conoco |
| Ravalli County Courthouse |
| Raymond Grain Elevators Historic District |
| Recreation Hall |
| Red Lodge-Cooke City Approach Road Historic District |
| Reed and Bowles Trading Post |
| Reed's Fort Post Office |
| Reese Creek School |
Data from United States Park Service and Wikidata
