Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Lovells Gulch | Valley | | Beaverhead | 45 06 46 N | 112 41 52 W |
| Lovells Lake | Lake | 1675 | Beaverhead | 45 06 39 N | 112 42 49 W |
| Lovely Ranch | Locale | 1782 | Park | 45 57 57 N | 110 30 48 W |
| Low Bench Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Low Clearing Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Low Pass | Gap | 1996 | Deer Lodge | 46 12 10 N | 113 11 12 W |
| Low Pass | Gap | 2756 | Madison | 45 35 08 N | 112 07 49 W |
| Low Saddle | Locale | 1644 | Ravalli | 45 52 02 N | 113 59 34 W |
| Low Vision Clinic | Hospital | 1248 | Lewis and Clark | 46 35 17 N | 112 00 17 W |
| Lowary Lake | Lake | 3143 | Carbon | 45 09 23 N | 109 47 38 W |
| Lowary Peak | Summit | 2858 | Lake | 47 18 47 N | 113 54 03 W |
| Lowel Bitney Gulch | Valley | | Madison | 45 32 12 N | 112 07 59 W |
| Lowell Creek | Stream | | Sweet Grass | 45 48 17 N | 110 14 52 W |
| Lowell School | School | 974 | Missoula | 46 52 49 N | 114 00 30 W |
| Lowell School (historical) | School | 1050 | Cascade | 47 30 39 N | 111 15 11 W |
| Lowell School (historical) | School | 649 | Sheridan | 48 39 54 N | 104 15 10 W |
| Lower Aero Lake | Lake | 3046 | Park | 45 06 31 N | 109 51 52 W |
| Lower Alice E Mine | Mine | 2590 | Park | 45 01 53 N | 109 55 29 W |
| Lower Anderson Meadows | Swamp | 2179 | Beaverhead | 45 33 16 N | 113 08 47 W |
| Lower Arch Lake | Lake | 2912 | Carbon | 45 09 55 N | 109 43 20 W |
| Lower Baker Dam | Dam | 903 | Fallon | 46 22 06 N | 104 16 20 W |
| Lower Barriers Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Lower Basin | Basin | 1848 | Gallatin | 45 14 15 N | 111 14 44 W |
| Lower Basin Creek Lake | Lake | 2557 | Carbon | 45 09 01 N | 109 24 47 W |
| Lower Belle Prairie School (historical) | School | 733 | Dawson | 47 13 26 N | 104 33 22 W |
| Lower Belt Cemetery | Cemetery | 1018 | Cascade | 47 29 50 N | 110 53 53 W |
| Lower Big Snowy Mine | Mine | 2283 | Cascade | 46 56 47 N | 110 42 07 W |
| Lower Birch Creek Bar | Bar | 1520 | Meagher | 46 33 37 N | 111 02 54 W |
| Lower Black Diamond Mine | Mine | 2059 | Cascade | 46 57 18 N | 110 42 03 W |
| Lower Blacktail Reservoir | Reservoir | 844 | Rosebud | 46 37 60 N | 107 04 09 W |
| Lower Blacktail Reservoir Dam | Dam | 844 | Rosebud | 46 37 60 N | 107 04 14 W |
| Lower Blacktail Trail | Trail | 1822 | Park | 44 59 37 N | 110 34 44 W |
| Lower Bloody Dick Ditch | Canal | 1901 | Beaverhead | 45 01 07 N | 113 17 08 W |
| Lower Bone Crusher Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Lower Boulder Lake | Lake | 2590 | Madison | 45 36 30 N | 112 07 42 W |
| Lower Bowman Lake | Reservoir | 2402 | Powell | 46 18 48 N | 113 01 27 W |
| Lower Branham Dam | Dam | 2672 | Madison | 45 30 48 N | 111 59 33 W |
| Lower Branham Lake | Reservoir | 2672 | Madison | 45 30 48 N | 111 59 33 W |
| Lower Bridge Gulch Mine | Mine | 2106 | Beaverhead | 45 22 40 N | 112 50 03 W |
| Lower Bridger (historical) | Populated Place | 1538 | Gallatin | 45 42 10 N | 110 55 44 W |
| Lower Bridger School (historical) | School | 1538 | Gallatin | 45 42 10 N | 110 55 44 W |
| Lower Broncho Ski Trail | Trail | 1816 | Lewis and Clark | 46 45 12 N | 112 18 50 W |
| Lower Burnett Headcut Dam | Dam | 727 | Valley | 48 03 54 N | 107 06 38 W |
| Lower Calamity Jane Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Lower Carpp Lake | Lake | 2337 | Granite | 46 00 59 N | 113 27 14 W |
| Lower Carter Pond Dam | Dam | 1219 | Fergus | 47 08 06 N | 109 25 57 W |
| Lower Carter Pond Fishing Access Site | Locale | 1226 | Fergus | 47 08 31 N | 109 25 47 W |
| Lower Cattle Gulch Spring | Spring | 2021 | Beaverhead | 45 41 44 N | 112 48 33 W |
| Lower Cedar Lake | Lake | 1684 | Lincoln | 48 22 37 N | 115 44 32 W |
| Lower Champion Mine | Mine | 2010 | Cascade | 46 56 43 N | 110 43 37 W |
| Lower Chestnut Valley | Flat | 1025 | Cascade | 47 17 12 N | 111 38 15 W |
| Lower Cleve Mine | Mine | 2531 | Beaverhead | 45 36 14 N | 112 54 48 W |
| Lower Coal Creek Reservoir | Reservoir | 958 | Powder River | 45 35 02 N | 106 09 13 W |
| Lower Cold Lake | Lake | 1752 | Missoula | 47 33 33 N | 113 53 17 W |
| Lower Continental Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Lower Corral Creek School (historical) | School | 745 | Dawson | 47 29 19 N | 105 21 19 W |
| Lower Cottonwood Spring | Spring | 1730 | Stillwater | 45 28 30 N | 109 49 30 W |
| Lower Crackerbox School (historical) | School | 777 | Dawson | 46 59 34 N | 104 59 05 W |
| Lower Crow Reservoir | Reservoir | 875 | Lake | 47 30 10 N | 114 13 42 W |
| Lower Dam | Dam | 838 | Prairie | 47 03 30 N | 105 59 14 W |
| Lower Deep Creek Spring | Spring | 2495 | Beaverhead | 44 31 49 N | 112 33 51 W |
| Lower Deer Creek | Stream | | Sweet Grass | 45 46 59 N | 109 47 30 W |
| Lower Deer Creek Well | Well | 1025 | Powder River | 45 41 12 N | 106 02 40 W |
| Lower Dick Creek Mine | Mine | 1763 | Missoula | 46 41 17 N | 114 21 31 W |
| Lower Ditch | Canal | 1418 | Madison | 45 35 29 N | 111 29 47 W |
| Lower Eddy Creek Mine | Mine | 1472 | Mineral | 47 08 03 N | 114 40 48 W |
| Lower Eighth Coulee | Valley | | Valley | 47 47 29 N | 106 44 29 W |
| Lower Elliot Lake | Reservoir | 2422 | Powell | 46 20 14 N | 112 59 53 W |
| Lower Elliot Lake Dam | Dam | 2424 | Powell | 46 20 12 N | 112 59 51 W |
| Lower Ellis Place | Populated Place | 1334 | Lewis and Clark | 47 16 60 N | 112 17 33 W |
| Lower Falls | Falls | 952 | Lincoln | 48 56 08 N | 115 40 54 W |
| Lower Falls Creek Lake | Lake | 2618 | Madison | 45 23 58 N | 111 27 49 W |
| Lower Flatwillow School (historical) | School | 994 | Petroleum | 46 49 54 N | 108 23 37 W |
| Lower Foy Lake | Lake | 955 | Flathead | 48 10 39 N | 114 22 01 W |
| Lower Frost Creek Mine | Mine | 1711 | Granite | 46 19 28 N | 113 16 50 W |
| Lower Gannion Mine | Mine | 1625 | Liberty | 48 51 00 N | 111 09 30 W |
| Lower Gish Mine | Mine | 1708 | Sweet Grass | 45 28 40 N | 110 12 13 W |
| Lower Glaston Lake | Lake | 1420 | Sweet Grass | 45 59 59 N | 109 49 57 W |
| Lower Glengarry Mine | Mine | 2831 | Park | 45 04 05 N | 109 56 58 W |
| Lower Gooseberry Spring | Spring | 1686 | Madison | 45 45 50 N | 112 04 12 W |
| Lower Hale Mine | Mine | 1011 | Lincoln | 48 27 10 N | 115 58 27 W |
| Lower Hansen Reservoir | Reservoir | 1097 | Blaine | 48 07 29 N | 109 10 19 W |
| Lower Hanson Spring | Spring | 968 | Garfield | 47 05 05 N | 106 52 07 W |
| Lower Hawkeye Mine | Mine | 1520 | Phillips | 47 55 10 N | 108 34 37 W |
| Lower High Park Ski Trail | Trail | 1810 | Missoula | 47 01 25 N | 113 59 50 W |
| Lower Hill Cemetery | Cemetery | 1657 | Deer Lodge | 46 07 22 N | 112 57 30 W |
| Lower Holly Sugar Dam | Dam | 580 | Richland | 47 42 24 N | 104 07 26 W |
| Lower Hot Fudge Ski Trail | Trail | 1810 | Missoula | 47 01 25 N | 113 59 50 W |
| Lower I X L Mine | Mine | 2079 | Cascade | 46 57 08 N | 110 42 46 W |
| Lower Indian Creek Reservoir | Reservoir | 1252 | Big Horn | 45 16 21 N | 107 00 48 W |
| Lower Indian Creek Reservoir Dam | Dam | 1252 | Big Horn | 45 16 24 N | 107 00 50 W |
| Lower Jefferson Ditch | Canal | 1251 | Gallatin | 45 51 57 N | 111 36 55 W |
| Lower Jocko Canal | Canal | 812 | Sanders | 47 16 49 N | 114 13 09 W |
| Lower Jocko J Canal | Canal | 814 | Sanders | 47 18 32 N | 114 18 55 W |
| Lower Jocko Lake | Lake | 1453 | Missoula | 47 11 56 N | 113 45 00 W |
| Lower Lake Dam Number 2 | Dam | 2108 | Missoula | 47 00 30 N | 113 54 39 W |
| Lower Lake of Twin Lakes | Reservoir | 2108 | Missoula | 47 00 30 N | 113 54 39 W |
| Lower Lateral | Canal | 1051 | Ravalli | 46 21 01 N | 114 05 39 W |
| Lower Lettermen Mine | Mine | 807 | Sanders | 47 25 43 N | 114 53 40 W |
| Lower Limestone Ski Trail | Trail | 1863 | Gallatin | 45 49 02 N | 110 53 48 W |
| Lower Limited Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Lower Lone Tree Reservoir | Reservoir | 696 | Valley | 47 57 02 N | 106 54 15 W |
| Lower Madison (historical) | Populated Place | 1260 | Gallatin | 45 50 20 N | 111 28 43 W |
| Lower Madison School (historical) | School | 1261 | Gallatin | 45 50 20 N | 111 29 13 W |
| Lower Mambo Ski Trail | Trail | 1175 | Lincoln | 48 36 18 N | 115 37 50 W |
| Lower Miami Beach Ski Trail | Trail | 2528 | Carbon | 45 11 15 N | 109 21 03 W |
| Lower Miner Lakes | Lake | 2126 | Beaverhead | 45 19 31 N | 113 34 30 W |
| Lower Mister K Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Lower Morningstar Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Lower Mullys Ski Trail | Trail | 1454 | Flathead | 48 29 06 N | 114 21 13 W |