Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Meadow Mountain | Summit | 2157 | Flathead | 47 49 10 N | 113 22 14 W |
| Meadow Mountain | Summit | 1354 | Mineral | 47 26 14 N | 115 29 32 W |
| Meadow Mountain Mine | Mine | 1246 | Mineral | 47 26 55 N | 115 29 35 W |
| Meadow Mountain Mine | Mine | 1263 | Mineral | 47 27 10 N | 115 30 14 W |
| Meadow Mountain Mines | Mine | 1246 | Mineral | 47 27 12 N | 115 30 12 W |
| Meadow Mountain/Tarbox Mine | Mine | 1212 | Mineral | 47 37 10 N | 115 30 09 W |
| Meadow Park | Park | 599 | Richland | 47 43 17 N | 104 11 02 W |
| Meadow Peak | Summit | 2033 | Flathead | 48 04 47 N | 114 59 20 W |
| Meadow Ridge Trail | Trail | 1716 | Lincoln | 48 07 01 N | 115 00 51 W |
| Meadow Run Ski Trail | Trail | 2150 | Ravalli | 45 41 35 N | 113 57 08 W |
| Meadow Trail Ski Trail | Trail | 2150 | Ravalli | 45 41 35 N | 113 57 08 W |
| Meadowbrook School | School | 888 | Custer | 46 23 47 N | 105 31 40 W |
| Meadowbrook School (historical) | School | 1184 | Glacier | 48 44 25 N | 112 15 15 W |
| Meadowlark Country Club | Locale | 1012 | Cascade | 47 29 19 N | 111 19 08 W |
| Meadowlark Elementary School | School | 735 | Blaine | 48 35 22 N | 109 14 06 W |
| Meadowlark Elementary School | School | 1073 | Pondera | 48 10 17 N | 111 56 49 W |
| Meadowlark Elementary School | School | 1005 | Toole | 48 30 28 N | 111 51 46 W |
| Meadowlark Mobile Home Park | Populated Place | 890 | Flathead | 48 10 10 N | 114 18 33 W |
| Meadowlark Park | Park | 1012 | Cascade | 47 28 50 N | 111 19 33 W |
| Meadowlark RV Park | Locale | 634 | Lincoln | 48 23 44 N | 115 34 06 W |
| Meadowlark School | School | 1017 | Cascade | 47 28 57 N | 111 19 41 W |
| Meadowlark School (historical) | School | 1483 | Gallatin | 45 57 20 N | 111 08 53 W |
| Meadows Coulee | Valley | | McCone | 47 28 41 N | 106 15 04 W |
| Meadows Ranch | Locale | 1210 | Teton | 47 45 38 N | 112 16 32 W |
| Meadowview Cemetery | Cemetery | 1311 | Gallatin | 45 49 28 N | 111 18 32 W |
| Meagher County | Civil | 1575 | Meagher | 46 35 00 N | 110 50 03 W |
| Meagher County Courthouse | Building | 1536 | Meagher | 46 32 55 N | 110 54 13 W |
| Meagher County Rural Fire Department | Building | 1540 | Meagher | 46 32 43 N | 110 54 18 W |
| Meagher County Sheriff Department | Building | 1540 | Meagher | 46 32 43 N | 110 54 18 W |
| Meagher County-City Library | Building | 1537 | Meagher | 46 32 53 N | 110 54 08 W |
| Meagher Gulch | Valley | | Lewis and Clark | 46 48 41 N | 112 18 31 W |
| Meatrack Creek | Stream | | Park | 45 20 26 N | 110 14 32 W |
| Mecaha (historical) | Populated Place | 691 | Garfield | 47 19 15 N | 107 56 04 W |
| Mecaha Post Office (historical) | Post Office | 691 | Garfield | 47 19 15 N | 107 56 04 W |
| Mecaha School (historical) | School | 691 | Garfield | 47 19 15 N | 107 56 04 W |
| Mecaha School (historical) | School | 805 | Petroleum | 47 18 11 N | 107 58 44 W |
| Mecca Gulch | Valley | | Granite | 46 37 38 N | 113 39 10 W |
| Meccage Number 3 Dam | Dam | 958 | Fallon | 45 59 06 N | 104 06 38 W |
| Meckel Coulee | Valley | | Garfield | 47 15 59 N | 107 21 11 W |
| Meckel School (historical) | School | 942 | Garfield | 47 12 34 N | 107 24 46 W |
| Medhurst Post Office (historical) | Post Office | 1635 | Granite | 46 24 60 N | 113 10 03 W |
| Medical Arts of White Sulphur Springs | Hospital | 1536 | Meagher | 46 32 52 N | 110 54 11 W |
| Medical Clinic | Hospital | 630 | Sheridan | 48 46 46 N | 104 33 49 W |
| Medicine Elk Creek | Stream | | Big Horn | 45 31 32 N | 106 48 31 W |
| Medicine Grizzly Lake | Lake | 1697 | Glacier | 48 33 59 N | 113 29 44 W |
| Medicine Grizzly Peak | Summit | 2485 | Flathead | 48 33 34 N | 113 27 55 W |
| Medicine Grizzly Trail | Trail | 1706 | Glacier | 48 34 09 N | 113 29 19 W |
| Medicine Hot Springs | Populated Place | 1352 | Ravalli | 45 50 46 N | 114 02 07 W |
| Medicine Lake | Lake | 3019 | Carbon | 45 07 08 N | 109 46 13 W |
| Medicine Lake | Lake | 2061 | Granite | 46 07 32 N | 113 40 38 W |
| Medicine Lake | Locale | 595 | Sheridan | 48 30 09 N | 104 30 26 W |
| Medicine Lake | Populated Place | 597 | Sheridan | 48 30 05 N | 104 30 17 W |
| Medicine Lake | Reservoir | 590 | Sheridan | 48 28 37 N | 104 30 34 W |
| Medicine Lake Cemetery | Cemetery | 605 | Sheridan | 48 29 55 N | 104 28 39 W |
| Medicine Lake Lutheran Church | Church | 597 | Sheridan | 48 30 01 N | 104 30 23 W |
| Medicine Lake Memorial Park | Park | 599 | Sheridan | 48 30 06 N | 104 29 56 W |
| Medicine Lake National Wildlife Refuge | Park | 590 | Sheridan | 48 28 13 N | 104 25 50 W |
| Medicine Lake Post Office | Post Office | 598 | Sheridan | 48 30 10 N | 104 30 16 W |
| Medicine Lake Refuge Number 11 Dam | Dam | 593 | Sheridan | 48 30 54 N | 104 16 02 W |
| Medicine Lake Refuge Number 12 Dam | Dam | 593 | Sheridan | 48 31 24 N | 104 15 02 W |
| Medicine Lake Refuge Number 4 Dam | Dam | 590 | Sheridan | 48 28 36 N | 104 30 32 W |
| Medicine Lake Refuge Number 6 Dam | Dam | 587 | Sheridan | 48 24 30 N | 104 34 14 W |
| Medicine Lake School | School | 598 | Sheridan | 48 30 07 N | 104 30 09 W |
| Medicine Lake Wilderness | Reserve | 619 | Sheridan | 48 25 54 N | 104 20 33 W |
| Medicine Lake-Sheridan County Airport (historical) | Airport | 605 | Sheridan | 48 30 08 N | 104 29 42 W |
| Medicine Lodge (historical) | Locale | 1744 | Beaverhead | 44 58 50 N | 112 59 23 W |
| Medicine Lodge (historical) | Locale | 2071 | Beaverhead | 44 45 45 N | 113 01 43 W |
| Medicine Lodge Creek | Stream | | Beaverhead | 44 58 58 N | 112 56 55 W |
| Medicine Lodge Peak | Summit | 2761 | Beaverhead | 44 47 19 N | 113 02 59 W |
| Medicine Lodge Post Office (historical) | Post Office | 1744 | Beaverhead | 44 58 50 N | 112 59 23 W |
| Medicine Mountain | Summit | 3512 | Carbon | 45 05 20 N | 109 36 44 W |
| Medicine Owl Creek | Stream | | Glacier | 48 37 55 N | 113 31 11 W |
| Medicine Owl Lake | Lake | 2076 | Glacier | 48 36 21 N | 113 28 50 W |
| Medicine Owl Peak | Summit | 2520 | Glacier | 48 36 32 N | 113 29 43 W |
| Medicine Point | Cliff | 2561 | Ravalli | 45 48 25 N | 114 06 36 W |
| Medicine Ridge Ski Trail | Trail | 2175 | Granite | 46 15 23 N | 113 14 31 W |
| Medicine Rock Creek | Stream | | Lewis and Clark | 46 56 06 N | 112 07 38 W |
| Medicine Rocks | Area | 1045 | Carter | 46 02 40 N | 104 28 17 W |
| Medicine Rocks Campground | Locale | 1057 | Carter | 46 02 30 N | 104 28 15 W |
| Medicine Rocks Church | Church | 1039 | Carter | 46 03 16 N | 104 27 23 W |
| Medicine Rocks State Park | Park | 1045 | Carter | 46 02 40 N | 104 28 17 W |
| Medicine Springs | Spring | 1467 | Teton | 47 37 59 N | 112 51 19 W |
| Medicine Structure Dam | Dam | 589 | Roosevelt | 48 23 06 N | 104 34 44 W |
| Medicine Tail Coulee | Valley | | Big Horn | 45 32 49 N | 107 24 56 W |
| Medicine Tail Creek | Stream | | Big Horn | 45 32 50 N | 107 24 55 W |
| Medicine Tail Ford | Locale | 940 | Big Horn | 45 32 49 N | 107 24 58 W |
| Medicine Tree | Hospital | 896 | Lake | 47 19 12 N | 114 05 38 W |
| Medicine Tree | Hospital | 942 | Lake | 47 09 43 N | 114 05 06 W |
| Medicine Tree Creek | Stream | | Ravalli | 45 54 26 N | 114 04 55 W |
| Medicine Tree Fishing Access Site | Locale | 1135 | Granite | 46 42 04 N | 113 29 32 W |
| Medicine Tree Hill | Summit | 1251 | Granite | 46 41 58 N | 113 28 01 W |
| Medicine Tree Historical Marker | Park | 1281 | Ravalli | 45 54 25 N | 114 04 33 W |
| Medicine Tree Point of Interest | Locale | 1307 | Ravalli | 45 54 27 N | 114 04 33 W |
| Medicine Tree Primary Care | Hospital | 586 | Lincoln | 48 27 27 N | 115 53 42 W |
| Medona Mine | Mine | 2598 | Park | 45 02 40 N | 110 36 03 W |
| Medona North Mine | Mine | 2591 | Park | 45 02 50 N | 110 35 53 W |
| Mees Number 1 Dam | Dam | 913 | Rosebud | 46 06 30 N | 106 18 50 W |
| Meeteetse Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Meeting Place Dam | Dam | 757 | Phillips | 48 14 54 N | 108 02 20 W |
| Meharry Post Office (historical) | Post Office | 865 | Valley | 48 57 30 N | 107 10 03 W |
| Meigs Ranch | Locale | 1546 | Park | 45 42 42 N | 110 35 45 W |
| Meili Coulee | Valley | | Hill | 48 34 48 N | 109 46 35 W |
| Meill Ditch | Canal | 767 | Hill | 48 33 50 N | 109 45 52 W |
| Meine Cow Camp | Locale | 1813 | Beaverhead | 45 21 21 N | 112 46 55 W |
| Meisenbach School (historical) | School | 1358 | Cascade | 47 13 30 N | 111 15 01 W |
| Meisser School (historical) | School | 1223 | Fergus | 46 59 53 N | 109 43 33 W |
| Meissner American Legion Baseball Field | Park | 646 | Dawson | 47 07 55 N | 104 41 07 W |
| Meissner Dam | Dam | 1096 | Liberty | 48 45 18 N | 111 02 39 W |
| Melaas School (historical) | School | 895 | Blaine | 48 41 05 N | 108 23 58 W |
| Melbourne (historical) | Locale | 1080 | Lincoln | 48 15 27 N | 114 58 21 W |