Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Captain Meriwether Lewis Historical Marker | Park | 1191 | Pondera | 48 19 30 N | 112 32 48 W |
| Captain William Clark Historical Marker | Park | 1189 | Sweet Grass | 45 44 08 N | 109 45 26 W |
| Capudj Dam | Dam | 764 | Hill | 48 33 54 N | 109 46 33 W |
| Caras Park | Park | 974 | Missoula | 46 52 10 N | 113 59 53 W |
| Caras Plaza | Locale | 971 | Missoula | 46 50 54 N | 114 01 08 W |
| Carasco Post Office (historical) | Post Office | 1111 | Blaine | 48 18 44 N | 109 29 31 W |
| Carbella | Populated Place | 1544 | Park | 45 12 28 N | 110 54 17 W |
| Carbella (historical) | Locale | 1544 | Park | 45 12 28 N | 110 54 17 W |
| Carbella Campground | Locale | 1526 | Park | 45 12 41 N | 110 54 11 W |
| Carbella Post Office (historical) | Post Office | 1544 | Park | 45 12 28 N | 110 54 17 W |
| Carbella Recreation Site | Locale | 1526 | Park | 45 12 41 N | 110 54 11 W |
| Carbella School (historical) | School | 1544 | Park | 45 12 28 N | 110 54 17 W |
| Carberry Dam | Dam | 811 | Phillips | 47 46 12 N | 107 58 56 W |
| Carberry Reservoir | Reservoir | 808 | Phillips | 47 45 40 N | 107 57 05 W |
| Carbert | Populated Place | 809 | Daniels | 48 58 33 N | 105 48 38 W |
| Carbert Post Office (historical) | Post Office | 809 | Daniels | 48 58 33 N | 105 48 38 W |
| Carbert School (historical) | School | 809 | Daniels | 48 58 33 N | 105 48 38 W |
| Carbine Lake | Lake | 1853 | Sanders | 47 44 03 N | 115 16 38 W |
| Carbon (historical) | Locale | 1177 | Carbon | 45 28 15 N | 109 01 08 W |
| Carbon Canal | Canal | 1115 | Carbon | 45 24 31 N | 108 55 05 W |
| Carbon County | Civil | 1223 | Carbon | 45 13 00 N | 109 04 03 W |
| Carbon County Courthouse | Building | 1692 | Carbon | 45 11 20 N | 109 14 48 W |
| Carbon County Memorial Hospital | Hospital | 1715 | Carbon | 45 10 38 N | 109 15 16 W |
| Carbon County Memorial Nursing Home | Hospital | 1715 | Carbon | 45 10 38 N | 109 15 16 W |
| Carbon County Museum | Building | 1716 | Carbon | 45 10 27 N | 109 15 01 W |
| Carbon County Sheriffs Department | Building | 1692 | Carbon | 45 11 20 N | 109 14 48 W |
| Carbon Hill | Summit | 768 | Custer | 46 23 50 N | 105 49 06 W |
| Carbon Hill Trailer Court | Populated Place | 729 | Custer | 46 23 57 N | 105 49 12 W |
| Carbonado Cemetery | Cemetery | 1221 | Carbon | 45 27 31 N | 109 00 53 W |
| Carbonado Ditch | Canal | 1216 | Carbon | 45 27 31 N | 109 01 59 W |
| Carbonado Mine | Mine | 1203 | Carbon | 45 27 42 N | 109 01 26 W |
| Carbonado Post Office (historical) | Post Office | 1197 | Carbon | 45 27 44 N | 109 01 25 W |
| Carbonado School (historical) | School | 1203 | Carbon | 45 27 42 N | 109 01 26 W |
| Carbonate (historical) | Locale | 2145 | Cascade | 47 01 10 N | 111 00 05 W |
| Carbonate King Mine | Mine | 1830 | Powell | 46 31 43 N | 112 25 58 W |
| Carbonate King Mine | Mine | 1834 | Powell | 46 31 43 N | 112 25 57 W |
| Carbonate Mine | Mine | 2169 | Beaverhead | 45 18 42 N | 112 52 54 W |
| Carbonate Mine | Mine | 1686 | Jefferson | 45 54 60 N | 112 02 03 W |
| Carbonate Mine | Mine | 1185 | Lewis and Clark | 46 39 58 N | 112 03 28 W |
| Carbonate Mine | Mine | 1639 | Lewis and Clark | 47 02 38 N | 112 22 45 W |
| Carbonate Mountain | Summit | 2811 | Park | 45 18 26 N | 110 16 18 W |
| Carcajou Lake | Lake | 1718 | Glacier | 48 58 13 N | 113 59 27 W |
| Carcass Coulee | Valley | | Garfield | 47 21 02 N | 106 25 15 W |
| Carda Coulee | Valley | | Richland | 47 48 57 N | 104 52 28 W |
| Cardinal (historical) | Locale | 1277 | Broadwater | 46 07 15 N | 111 21 30 W |
| Cardinal Creek | Stream | | Powell | 47 24 50 N | 113 22 09 W |
| Cardinal Mine | Mine | 1948 | Powell | 46 49 13 N | 113 16 11 W |
| Cardinal Peak | Summit | 2610 | Powell | 47 22 50 N | 113 22 05 W |
| Cardwell | Populated Place | 1305 | Jefferson | 45 51 36 N | 111 57 09 W |
| Cardwell (historical) | Locale | 1305 | Jefferson | 45 51 36 N | 111 57 09 W |
| Cardwell Bridge Fishing Access Site | Locale | 1305 | Madison | 45 51 07 N | 111 57 07 W |
| Cardwell Elementary School | School | 1305 | Jefferson | 45 51 25 N | 111 57 08 W |
| Cardwell Post Office | Post Office | 1305 | Jefferson | 45 51 36 N | 111 57 09 W |
| Cardwell School (historical) | School | 1116 | Stillwater | 45 40 39 N | 109 21 27 W |
| Careless Creek | Stream | | Golden Valley | 46 18 46 N | 109 11 11 W |
| Carey Butte | Summit | 1391 | Lewis and Clark | 47 30 17 N | 112 27 20 W |
| Carey Ditch | Canal | 1399 | Jefferson | 46 05 07 N | 111 55 03 W |
| Carey Ditch | Canal | 1529 | Madison | 45 29 14 N | 112 13 50 W |
| Carey Gulch | Valley | | Sweet Grass | 45 36 10 N | 109 48 04 W |
| Carey Lateral | Canal | 1713 | Granite | 46 11 59 N | 113 23 19 W |
| Carey-Malone School (historical) | School | 927 | Custer | 45 53 41 N | 105 49 22 W |
| Carey-Twohy Ditch | Canal | 1438 | Jefferson | 46 08 04 N | 111 59 13 W |
| Cargill (historical) | Locale | 1131 | Teton | 47 47 20 N | 111 40 23 W |
| Cargill Elevator | Locale | 1161 | Pondera | 48 18 35 N | 112 14 48 W |
| Cargill Elevator (historical) | Locale | 1152 | Pondera | 48 16 31 N | 112 07 49 W |
| Cariboo Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Caribou Campground | Locale | 1119 | Lincoln | 48 56 56 N | 115 30 12 W |
| Caribou Creek | Stream | | Lincoln | 48 56 53 N | 115 30 15 W |
| Caribou Creek | Stream | | Powell | 46 19 06 N | 112 44 04 W |
| Caribou Mountain | Summit | 2085 | Lincoln | 48 59 35 N | 115 30 49 W |
| Caribou Peak | Summit | 2663 | Lewis and Clark | 47 11 18 N | 112 34 25 W |
| Caribou Ski Trail | Trail | 1454 | Flathead | 48 29 06 N | 114 21 13 W |
| Caribou Trail | Trail | 2280 | Lewis and Clark | 47 10 23 N | 112 32 06 W |
| Carico Ditch | Canal | 1594 | Beaverhead | 45 08 20 N | 112 42 54 W |
| Carie Dam | Dam | 697 | Valley | 48 14 12 N | 106 59 50 W |
| Carl Creek | Stream | | Broadwater | 46 21 26 N | 111 07 20 W |
| Carl Dam | Dam | 936 | Phillips | 47 14 48 N | 107 23 14 W |
| Carl O'Hara Ranch | Locale | 963 | Chouteau | 47 46 15 N | 110 33 42 W |
| Carlan (historical) | Locale | 1121 | Granite | 46 42 45 N | 113 31 13 W |
| Carlisle Dam | Dam | 926 | Lincoln | 48 56 30 N | 115 39 04 W |
| Carlow Lake | Lake | 1229 | Glacier | 48 36 42 N | 112 37 26 W |
| Carlson | Locale | 1195 | Cascade | 47 02 23 N | 111 16 50 W |
| Carlson Chiropractic Offices | Hospital | 901 | Flathead | 48 11 48 N | 114 18 43 W |
| Carlson Coulee | Valley | | Liberty | 48 13 44 N | 111 14 20 W |
| Carlson Ranch | Locale | 1373 | Teton | 47 39 51 N | 112 36 13 W |
| Carlton | Populated Place | 983 | Missoula | 46 40 33 N | 114 04 43 W |
| Carlton (historical) | Locale | 983 | Missoula | 46 40 33 N | 114 04 43 W |
| Carlton Coulee | Valley | | Stillwater | 45 38 54 N | 109 20 40 W |
| Carlton Creek | Stream | | Missoula | 46 40 33 N | 114 04 21 W |
| Carlton Lake | Lake | 2379 | Missoula | 46 41 01 N | 114 13 15 W |
| Carlton Lake Number 1 Dam | Dam | 2379 | Missoula | 46 40 60 N | 114 13 15 W |
| Carlton Lake Trail | Trail | 2488 | Missoula | 46 41 18 N | 114 11 09 W |
| Carlton Post Office (historical) | Post Office | 983 | Missoula | 46 40 33 N | 114 04 43 W |
| Carlton School (historical) | School | 983 | Missoula | 46 40 33 N | 114 04 43 W |
| Carlyle | Populated Place | 963 | Wibaux | 46 39 18 N | 104 04 34 W |
| Carlyle (historical) | Locale | 963 | Wibaux | 46 39 30 N | 104 04 22 W |
| Carlyle Cemetery | Cemetery | 967 | Wibaux | 46 40 09 N | 104 04 50 W |
| Carlyle Lutheran Church (historical) | Church | 963 | Wibaux | 46 39 18 N | 104 04 34 W |
| Carlyle Post Office (historical) | Post Office | 971 | Wibaux | 46 39 26 N | 104 04 34 W |
| Carlyle School (historical) | School | 969 | Wibaux | 46 39 18 N | 104 04 20 W |
| Carmichael Basin | Basin | 1931 | Lewis and Clark | 47 15 20 N | 112 42 47 W |
| Carmichael Canyon | Valley | | Madison | 45 43 48 N | 111 58 12 W |
| Carmichael Creek | Stream | | Madison | 45 43 47 N | 111 58 15 W |
| Carmichael Ditch | Canal | 1382 | Lewis and Clark | 47 22 03 N | 112 23 09 W |
| Carmichael Guard Station | Locale | 1811 | Lewis and Clark | 47 15 37 N | 112 48 55 W |
| Carmichael School (historical) | School | 1075 | Petroleum | 46 53 20 N | 108 35 59 W |
| Carmine Creek | Stream | | Ravalli | 45 54 12 N | 113 40 25 W |
| Carmine Lake | Lake | 2436 | Ravalli | 45 50 50 N | 113 41 28 W |
| Carmine Peak | Summit | 2583 | Missoula | 47 26 34 N | 113 32 24 W |
| Carmody Mine | Mine | 1968 | Jefferson | 46 16 25 N | 111 57 05 W |