Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Western Mines Number 3 Mine | Mine | 1660 | Fergus | 47 10 07 N | 109 16 40 W |
| Western Mines Number 4 Mine | Mine | 1595 | Fergus | 47 10 10 N | 109 16 48 W |
| Western Montana Clinic Polson | Hospital | 902 | Lake | 47 41 01 N | 114 09 49 W |
| Western Montana College Gallery/Museum | Building | 1565 | Beaverhead | 45 12 30 N | 112 38 18 W |
| Western Montana College of the University of Montana | School | 1565 | Beaverhead | 45 12 30 N | 112 38 18 W |
| Western Montana Experiment Station | Locale | 1095 | Ravalli | 46 19 39 N | 114 05 03 W |
| Westernaire Drive-In Theater | Locale | 1255 | Fergus | 47 03 17 N | 109 28 35 W |
| Westfall | Populated Place | 859 | Mineral | 47 07 16 N | 114 47 16 W |
| Westfall Creek | Stream | | Mineral | 47 07 22 N | 114 46 15 W |
| Westfall School (historical) | School | 859 | Mineral | 47 07 16 N | 114 47 16 W |
| Westgard Dam | Dam | 720 | McCone | 47 56 00 N | 105 45 20 W |
| Westgate Shopping Center | Locale | 1484 | Gallatin | 45 40 18 N | 111 02 58 W |
| Westgate Shopping Mall | Locale | 1015 | Cascade | 47 31 20 N | 111 18 14 W |
| Westlake | Populated Place | 1377 | Gallatin | 45 43 46 N | 111 20 27 W |
| Westlake Park | Park | 1455 | Gallatin | 45 41 20 N | 111 02 30 W |
| Westland Flats | Flat | 805 | McCone | 47 51 14 N | 106 09 54 W |
| Westland Hill | Summit | 809 | McCone | 47 51 32 N | 106 10 56 W |
| Westling Dam | Dam | 1733 | Park | 46 07 48 N | 110 31 51 W |
| Westmore | Locale | 812 | Fallon | 46 28 30 N | 104 38 32 W |
| Westmore | Populated Place | 809 | Fallon | 46 28 27 N | 104 38 42 W |
| Westmore Post Office (historical) | Post Office | 811 | Fallon | 46 28 24 N | 104 38 38 W |
| Westmore School (historical) | School | 809 | Fallon | 46 28 27 N | 104 38 42 W |
| Weston Canyon | Valley | | Beaverhead | 45 02 57 N | 112 33 24 W |
| Weston Creek | Stream | | Broadwater | 46 18 15 N | 111 44 19 W |
| Weston School (historical) | School | 837 | Petroleum | 46 49 05 N | 107 51 59 W |
| Weston School (historical) | School | 818 | Rosebud | 46 49 13 N | 107 50 52 W |
| Weston Spring | Spring | 1678 | Meagher | 46 49 08 N | 111 15 52 W |
| Westover Gulch | Valley | | Jefferson | 46 25 18 N | 112 00 08 W |
| Westover Island | Island | 1052 | Carbon | 45 35 05 N | 109 04 40 W |
| Westphal Spring | Spring | 1669 | Madison | 45 46 10 N | 112 03 36 W |
| Westside Baptist Church | Church | 1019 | Cascade | 47 30 60 N | 111 19 39 W |
| Westside Christian Academy | School | 1249 | Lewis and Clark | 46 35 32 N | 112 02 31 W |
| Westside Field | Park | 823 | Mineral | 47 11 44 N | 114 54 07 W |
| Westside Playground | Park | 888 | Big Horn | 45 43 48 N | 107 37 36 W |
| Westside Professional Center | Hospital | 595 | Richland | 47 42 48 N | 104 10 25 W |
| Westside Reservoir Dam | Dam | 1732 | Silver Bow | 46 01 18 N | 112 35 27 W |
| Westside Reservoir Park | Park | 1822 | Silver Bow | 46 01 25 N | 112 33 08 W |
| Westside School | School | 839 | Valley | 48 24 00 N | 106 33 13 W |
| Westside School (historical) | School | 826 | Roosevelt | 48 24 28 N | 105 34 37 W |
| Westside United Methodist Church | Church | 1014 | Cascade | 47 30 27 N | 111 19 30 W |
| Westside Viaduct Park | Park | 1015 | Cascade | 47 30 25 N | 111 20 28 W |
| Westview Park | Populated Place | 999 | Missoula | 46 54 43 N | 114 02 33 W |
| Westview School | School | 1087 | Ravalli | 46 14 46 N | 114 10 07 W |
| Westward Winds Dam | Dam | 754 | Phillips | 48 06 54 N | 107 47 50 W |
| Westwood Estates | Populated Place | 720 | Custer | 46 24 45 N | 105 50 15 W |
| Westwood Shopping Area | Locale | 1013 | Cascade | 47 31 07 N | 111 18 48 W |
| Wet Cottonwood Creek | Stream | | Powell | 46 45 27 N | 112 56 17 W |
| Wet Creek | Stream | | Meagher | 46 51 59 N | 110 49 46 W |
| Wet Fork | Stream | | Powell | 46 39 23 N | 112 26 30 W |
| Wet Georgia Gulch | Valley | | Madison | 45 29 51 N | 112 16 56 W |
| Wet Georgia Gulch Mine | Mine | 2027 | Madison | 45 31 58 N | 112 10 55 W |
| Wet Mulkey Gulch | Valley | | Granite | 46 44 33 N | 113 16 31 W |
| Wet Mutt Dam | Dam | 1167 | Fergus | 47 17 18 N | 109 46 39 W |
| Wet Park | Flat | 2159 | Meagher | 46 53 38 N | 110 49 05 W |
| Wetzel | Populated Place | 1450 | Glacier | 48 45 12 N | 113 09 53 W |
| Wetzel Post Office (historical) | Post Office | 1450 | Glacier | 48 45 12 N | 113 09 53 W |
| Wetzel School (historical) | School | 1039 | Cascade | 47 30 14 N | 110 53 46 W |
| Weythman Gulch | Valley | | Lake | 47 40 55 N | 114 14 58 W |
| Whale Buttes | Summit | 1476 | Flathead | 48 51 12 N | 114 26 55 W |
| Whale Creek | Stream | | Flathead | 48 50 59 N | 114 21 12 W |
| Whale Creek Falls | Falls | 1370 | Flathead | 48 51 04 N | 114 36 10 W |
| Whale Lake | Lake | 1863 | Flathead | 48 48 24 N | 114 42 31 W |
| Whaley Mine | Mine | 1343 | Missoula | 46 41 08 N | 113 59 16 W |
| Whaley Mine | Mine | 1306 | Missoula | 46 41 06 N | 113 59 13 W |
| Whaley Number 10 Dam | Dam | 811 | Rosebud | 46 22 36 N | 106 32 14 W |
| Whaley Number 11 Dam | Dam | 875 | Rosebud | 46 38 30 N | 106 47 50 W |
| Whaley Number 13 Dam | Dam | 868 | Rosebud | 46 38 18 N | 106 46 50 W |
| Whaley Ranch | Locale | 1165 | Broadwater | 46 23 07 N | 111 28 21 W |
| Whaley School (historical) | School | 1165 | Broadwater | 46 23 01 N | 111 28 19 W |
| Whatchamacallit Dam | Dam | 704 | Valley | 47 53 18 N | 106 57 14 W |
| Whately | Populated Place | 638 | Valley | 48 09 46 N | 106 30 41 W |
| Whately (historical) | Locale | 638 | Valley | 48 09 46 N | 106 30 42 W |
| Whately Coulee | Valley | | Valley | 48 09 53 N | 106 30 23 W |
| Whately Post Office (historical) | Post Office | 638 | Valley | 48 09 46 N | 106 30 42 W |
| Whatshername Dam | Dam | 673 | Valley | 48 03 24 N | 106 37 14 W |
| Whatshisname Dam | Dam | 676 | Valley | 48 06 36 N | 106 36 44 W |
| Whatsitsname Dam | Dam | 711 | Valley | 47 57 54 N | 106 39 08 W |
| Wheal Rose Mine | Mine | 2150 | Beaverhead | 45 11 60 N | 112 56 03 W |
| Wheat Basin | Locale | 1202 | Stillwater | 45 55 05 N | 109 03 49 W |
| Wheat Basin Post Office (historical) | Post Office | 1202 | Stillwater | 45 55 05 N | 109 03 49 W |
| Wheat Crop Dam | Dam | 1392 | Wheatland | 46 29 54 N | 109 54 51 W |
| Wheat Ranch | Locale | 2232 | Beaverhead | 44 54 29 N | 112 39 23 W |
| Wheatbelt Post Office (historical) | Post Office | 879 | Hill | 48 57 28 N | 110 20 05 W |
| Wheatcroft Reservoir | Reservoir | 879 | Garfield | 47 15 00 N | 107 19 10 W |
| Wheatgrass Gulch | Valley | | Sanders | 47 36 44 N | 115 31 16 W |
| Wheatland County | Civil | 1310 | Wheatland | 46 27 00 N | 109 50 03 W |
| Wheatland County Airport | Airport | 1316 | Wheatland | 46 27 14 N | 109 51 20 W |
| Wheatland County Courthouse | Building | 1285 | Wheatland | 46 26 12 N | 109 50 10 W |
| Wheatland County Sheriffs Office | Building | 1288 | Wheatland | 46 26 14 N | 109 50 10 W |
| Wheatland County Women, Infants and Children Hospital | Hospital | 1291 | Wheatland | 46 26 15 N | 109 50 28 W |
| Wheatland Memorial Hospital | Hospital | 1291 | Wheatland | 46 26 15 N | 109 50 28 W |
| Wheatland Memorial Nursing Home | Hospital | 1291 | Wheatland | 46 26 15 N | 109 50 28 W |
| Wheatland Post Office (historical) | Post Office | 950 | Valley | 48 47 15 N | 106 27 34 W |
| Wheatland School (historical) | School | 1453 | Jefferson | 46 00 18 N | 111 42 05 W |
| Wheatland School (historical) | School | 809 | Prairie | 46 42 54 N | 105 11 45 W |
| Wheatland School (historical) | School | 982 | Valley | 48 47 36 N | 106 26 15 W |
| Wheatley Farms Number 1 Dam | Dam | 790 | McCone | 47 28 48 N | 105 48 20 W |
| Wheatley Farms Number 2 Dam | Dam | 777 | McCone | 47 27 54 N | 105 46 20 W |
| Wheaton (historical) | Populated Place | 1145 | Musselshell | 46 35 04 N | 108 51 06 W |
| Wheaton Post Office (historical) | Post Office | 1145 | Musselshell | 46 35 04 N | 108 51 06 W |
| Wheel Springs | Spring | 1538 | Jefferson | 46 25 30 N | 112 02 25 W |
| Wheelbarrow Creek | Stream | | Ravalli | 46 34 47 N | 113 56 40 W |
| Wheeler | Populated Place | 709 | Valley | 48 00 34 N | 106 30 22 W |
| Wheeler Barite Mine | Mine | 1650 | Missoula | 46 58 18 N | 114 21 28 W |
| Wheeler Butte | Summit | 1513 | Sweet Grass | 46 02 30 N | 109 58 03 W |
| Wheeler Coulee | Valley | | Valley | 48 02 08 N | 106 31 29 W |
| Wheeler Creek | Stream | | Flathead | 48 05 47 N | 113 43 48 W |
| Wheeler Creek | Stream | | Ravalli | 45 48 12 N | 114 15 58 W |
| Wheeler Creek | Stream | | Sweet Grass | 46 01 02 N | 109 54 45 W |
| Wheeler Gulch | Valley | | Gallatin | 45 31 10 N | 111 03 31 W |