| Museum | Location | County |
|---|
| American Computer & Robotics Museum | Bozeman | Gallatin |
| Archie Bray Foundation for the Ceramic Arts | Helena | Lewis and Clark |
| Bair Family Museum | Martinsdale | Meagher |
| Beaverhead County Museum | Dillon | Beaverhead |
| Big Horn County Historical Museum | Hardin | Big Horn |
| Blaine County Museum | Chinook | Blaine |
| Broadwater County Museum | Townsend | Broadwater |
| Canton Church Historic Site | Townsend | Broadwater |
| Carbon County Historical Society Museum | Red Lodge | Carbon |
| Carter County Museum | Ekalaka | Carter |
| Castle Museum, Montana | White Sulphur Springs | Meagher |
| Central Montana Museum | Lewistown | Fergus |
| Children's Museum Missoula | Missoula | Missoula |
| Children's Museum of Bozeman | Bozeman | Gallatin |
| Children's Museum of Northeast Montana | Glasgow | Valley |
| Clark Chateau | Butte | Silver Bow |
| C.M. Russell Museum | Great Falls | Cascade |
| Conrad Mansion Museum | Kalispell | Flathead |
| Conrad Transportation and Historical Museum | Conrad | Pondera |
| Copper King Mansion | Butte | Silver Bow |
| Copper Village Museum & Arts Center | Anaconda | Deer Lodge |
| Crazy Mountain Museum | Big Timber | Sweet Grass |
| Culbertson Museum | Culbertson | Roosevelt |
| Custer Battlefield Museum | Garryowen | Big Horn |
| Daly Mansion | Hamilton | Ravalli |
| Daniels County Museum & Pioneer Town | Scobey | Daniels |
| Darby Pioneer Memorial Museum | Darby | Ravalli |
| Darby Ranger Station Visitor's Center and Museum | Darby | Ravalli |
| Dumas Brothel | Butte | Silver Bow |
| Earth Science Museum | Loma | Chouteau |
| Fly Fishing Discovery Center | Livingston | Park |
| Fort Benton Museums | Fort Benton | Choteau |
| Fort Owen State Park | Stevensville | Ravalli |
| Fort Peck Interpretive Center | Fort Peck | Valley |
| Frontier Gateway Museum | Glendive | Dawson |
| Frontier Montana Museum | Deer Lodge | Powell |
| Galerie Trinitas | Great Falls | Cascade |
| Garfield County Museum | Jordan | Garfield |
| Gallatin History Museum | Bozeman | Gallatin |
| Glacier County Historical Museum | Cut Bank | Glacier |
| Glendive Dinosaur & Fossil Museum | Glendive | Dawson |
| Granite County Museum & Cultural Center | Philipsburg | Granite |
| Grant-Kohrs Ranch National Historic Site | Deer Lodge | Powell |
| Great Plains Dinosaur Museum and Field Station | Malta | Phillips |
| Grizzly & Wolf Discovery Center | West Yellowstone | Gallatin |
| H. Earl Clack Memorial Museum | Havre | Hill |
| Heritage Museum | Libby | Lincoln |
| Historic St. Mary's Mission | Stevensville | Ravalli |
| Historical Museum at Fort Missoula | Missoula | Missoula |
| The History Museum | Great Falls | Cascade |
| Hobson Museum | Hobson | Judith Basin |
| Hockaday Museum of Art | Kalispell | Flathead |
| Holt Heritage Museum | Lolo | Missoula |
| Holter Museum of Art | Helena | Lewis and Clark |
| Huntley Project Museum | Osborn | Yellowstone |
| Jefferson Valley Museum | Whitehall | Jefferson |
| Judith Basin County Museum | Stanford | Judith Basin |
| Larue-Hot Springs Museum | Hot Springs | Sanders |
| Legacy Doll Museum | Billings | Yellowstone |
| Lewis and Clark National Historic Trail Interpretive Center | Great Falls | Cascade |
| Liberty County Museum | Chester | Liberty |
| Livingston Depot Center | Livingston | Park |
| Mai Wah Museum | Butte | Silver Bow |
| Makoshika State Park | Glendive | Dawson |
| Malmstrom AFB Museum | Great Falls | Cascade |
| Marias Museum of History and Art | Shelby | Toole |
| MBMG Mineral Museum | Butte | Silver Bow |
| McCone County Museum | Circle | McCone |
| Mehmke Steam Tractor Museum | Great Falls | Cascade |
| Milwaukee Depot Museum | Harlowton | Wheatland |
| Miracle of America Museum | Polson | Lake |
| Missoula Art Museum | Missoula | Missoula |
| MonDak Heritage Center | Sidney | Richland |
| Montana Auto Museum | Deer Lodge | Powell |
| Montana Cowboy Hall of Fame | Wolf Point | Roosevelt |
| Montana Historical Society Museum | Helena | Lewis and Clark |
| Montana Law Enforcement Museum | Deer Lodge | Powell |
| Montana Military Museum | Helena | Lewis and Clark |
| Montana Museum of Art & Culture | Missoula | Missoula |
| Montana Natural History Center | Missoula | Missoula |
| Moss Mansion | Billings | Yellowstone |
| Museum at Central School | Kalispell | Flathead |
| Museum of Mountain Flying | Missoula | Missoula |
| Museum of the Plains Indian | Browning | Glacier |
| Museum of the Rockies | Bozeman | Gallatin |
| Musselshell Valley Historical Museum | Roundup | Musselshell |
| National Museum of Forest Service History | Missoula | Missoula |
| Ninepipes Museum | Charlo | Lake |
| North American Wildlife Museum | Coram | Flathead |
| O'Fallon Historical Museum | Baker | Fallon |
| Old Jail Museum | Thompson | Sanders |
| Old Prison Museum | Deer Lodge | Powell |
| Old Trail Museum | Choteau | Teton |
| Original Governor's Mansion | Helena | Lewis and Clark |
| Paris Gibson Square Museum of Art | Great Falls | Cascade |
| Phillips County Museum | Malta | Phillips |
| Piccadilly Transportation Memorabilia Museum | Butte | Silver Bow |
| Polson-Flathead Historical Museum | Polson | Lake |
| Powder River Historical Museum and Mac's Museum | Broadus | Powder River |
| Powell County Museum | Deer Lodge | Powell |
| Prairie County Museum & Gallery | Terry | Prairie |
| Range Riders Museum | Miles City | Custer |
| Ravalli County Museum | Hamilton | Ravalli |
| Richey Historical Museum | Richey | Dawson |
| Rocky Mountain Museum of Military History | Missoula | Missoula |
| Rosebud County Pioneer Museum | Forsythe | Rosebud |
| Rudyard Museum | Rudyard | Hill |
| Schoolhouse History and Art Center | Colstrip | Rosebud |
| Seeley Lake Historical Museum | Seeley Lake | Missoula |
| SpectrUM Discovery Area | Missoula | Missoula |
| St. Ignatius Mission | St. Ignatius | Lake |
| Tobacco Valley Historical Village | Eureka | Lincoln |
| Treasure County '89ers Museum | Hysham | Treasure |
| Two Medicine Dinosaur Center | Bynum | Teton |
| University of Montana Western Gallery/ Museum | Dillon | Beaverhead |
| Upper Musselshell Museum | Harlowton | Wheatland |
| Upper Swan Valley Historical Society Museum and Heritage Site | Condon | Missoula |
| Ursuline Center Heritage Museum | Great Falls | Cascade |
| Utica Museum | Utica | Judith Basin |
| Valley County Pioneer Museum | Glasgow | Valley |
| WaterWorks Art Museum | Miles City | Custer |
| Western Heritage Center | Billings | Yellowstone |
| Winifred Museum | Winifred | Fergus |
| World Museum of Mining | Butte | Silver Bow |
| Wright Zoological Museum | Missoula | Missoula |
| Yellowstone Art Museum | Billings | Yellowstone |
| Yellowstone County Museum | Billings | Yellowstone |
| Yellowstone Gateway Museum | Livingston | Park |
| Yellowstone Historic Center | West Yellowstone | Gallatin |
| Yesterday's Playthings | Deer Lodge | Powell |
