Montana - Criteria: A (event)
| Fish Creek Bay Boathouse |
| Fisk, Robert and Elizabeth, House |
| Flaming Arrow Lodge |
| Flathead River Bridge |
| Flathead Wholesale Grocery |
| Florence Hotel |
| Ford Creek Patrol Cabin |
| Forestvale Cemetery |
| Forkenbrock Funeral Home |
| Forsyth Bridge |
| Forsyth Main Street Historic District |
| Forsyth Residential Historic District |
| Forsyth Water Pumping Station |
| Fort Assinniboine |
| Fort Benton |
| Fort Benton Bridge |
| Fort Benton Engine House |
| Fort C. F. Smith Historic District |
| Fort Connah Site |
| Fort Keogh |
| Fort Logan and Blockhouse |
| Fort Missoula Historic District |
| Fort Owen |
| Fort Peck Original Houses Historic District |
| Fraternity Hall |
| Froggie's Stopping Place on the Whoop-Up Trail |
| Fromberg Methodist-Episcopal Church |
| Fromberg Opera House |
| Gallatin County Courthouse |
| Gallatin County High School |
| Gallatin County Jail |
| Gallatin Gateway Inn |
| Gallatin Valley Seed Company |
| Garage and Fire Station |
| Gardiner Jail |
| Garfield School |
| Gebo Barn |
| Gebo Cemetery |
| Gem Saloon |
| Geraldine Milwaukee Depot |
| Gibson-Lebert House |
| Gildersleeve Mine |
| Gilman State Bank |
| Gilpatrick-Root House |
| Gird Point Lookout |
| Glacier County Courthouse |
| Glacier National Park Tourist Trails-Inside Trail, South Circle, North Circle |
| Gladstone Hotel |
| Glasgow Army Airfield Norden Bombsight Storage Vault |
| Gleason Building |
| Gleim Building |
| Gleim Building II |
| Glendive City Water Filtration Plant |
| Glendive Heat, Light and Power Company Power Plant |
| Glidden Mercantile |
| Goathaunt Bunkhouse |
| Going-to-the-Sun Road |
| Grace Lutheran Church of Barber |
| Grandey Elementary School |
| Grand Hotel |
| Grand Pacific Hotel |
| Grand Union Hotel |
| Granite Apartments |
| Granite County Jail |
| Grant-Kohrs Ranch National Historic Site |
| Graves Hotel |
| Great Falls Central Business Historic District |
| Great Falls High School Historic District |
| Great Falls Portage |
| Great Northern Railway Buildings |
| Great Northern Railway Depot |
| Great Northern Railway Passenger and Freight Depot and Division Office |
| Greenblatt, Samuel, House |
| Greve's Tourist Cabins |
| Gunsight Pass Shelter |
| Haight-Bridgwater House |
| Hale's Filling Station and Grocery |
| Halfway House |
| Hamilton Town Hall |
| Hammond Arcade |
| Hardy Bridge |
| Harrison Lake Patrol Cabin |
| Harrison, Waborn (Wabe) and Sarah E., Ranch House |
| Haverfield Hospital |
| Havre Residential Historic District |
| Hayward Lodge |
| Headquarters Building and Daily Company Annex |
| Headquarters Historic District |
| Heatherington Boarding House |
| Heaven's Peak Fire Lookout |
| Hecla House |
| Helena South-Central Historic District |
| Heller Building |
| Hellgate Lodge 383 BPOE |
| Heltne Oil Company |
| Hepburn, John, Place |
| Hi Bug Historic District |
| Hodgson House |
| Hogeland, Abraham and Mary Walton, House |
| Holy Family Mission |
Data from United States Park Service and Wikidata
