Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Nelson Draw | Valley | | Rosebud | 45 18 60 N | 106 32 29 W |
| Nelson Gulch | Valley | | Deer Lodge | 46 08 29 N | 113 07 37 W |
| Nelson Gulch | Valley | | Lewis and Clark | 46 34 38 N | 112 08 53 W |
| Nelson Gulch | Valley | | Lewis and Clark | 46 41 23 N | 112 23 03 W |
| Nelson Gulch (historical) | Locale | 1316 | Lewis and Clark | 46 33 60 N | 112 09 03 W |
| Nelson Irrigation Dam | Dam | 1482 | Wheatland | 46 33 18 N | 109 56 57 W |
| Nelson Island | Island | 1021 | Cascade | 47 20 38 N | 111 35 13 W |
| Nelson Lake | Lake | 2214 | Ravalli | 45 49 55 N | 114 21 25 W |
| Nelson Mine | Mine | 1886 | Beaverhead | 45 14 30 N | 112 53 48 W |
| Nelson Mine | Mine | 2539 | Madison | 45 13 15 N | 111 57 04 W |
| Nelson Number 1 Dam | Dam | 742 | McCone | 47 46 54 N | 106 08 14 W |
| Nelson Number 2 Dam | Dam | 736 | McCone | 47 46 30 N | 106 08 44 W |
| Nelson Post Office (historical) | Post Office | 1227 | Blaine | 48 17 12 N | 109 14 47 W |
| Nelson Post Office (historical) | Post Office | 1213 | Lewis and Clark | 46 49 01 N | 111 48 33 W |
| Nelson Ranch | Locale | 1363 | Park | 45 42 03 N | 110 31 14 W |
| Nelson Ranch | Locale | 1092 | Pondera | 48 22 49 N | 112 06 36 W |
| Nelson Ranch | Locale | 1304 | Sweet Grass | 45 53 01 N | 109 58 30 W |
| Nelson Reservoir | Reservoir | 1408 | Madison | 45 38 44 N | 112 17 07 W |
| Nelson Reservoir | Reservoir | 678 | Phillips | 48 29 43 N | 107 33 01 W |
| Nelson Reservoir | Reservoir | 736 | Phillips | 48 03 23 N | 107 52 30 W |
| Nelson Reservoir | Reservoir | 1455 | Wheatland | 46 33 41 N | 109 58 14 W |
| Nelson Reservoir Campground | Locale | 683 | Phillips | 48 30 55 N | 107 30 20 W |
| Nelson Reservoir Number 2 Dam | Dam | 729 | McCone | 47 43 42 N | 106 09 02 W |
| Nelson School (historical) | School | 1268 | Cascade | 47 22 53 N | 110 44 43 W |
| Nelson School (historical) | School | 1389 | Fergus | 46 58 60 N | 109 19 55 W |
| Nelson School (historical) | School | 1399 | Gallatin | 45 44 10 N | 111 04 03 W |
| Nelson School (historical) | School | 1213 | Lewis and Clark | 46 49 01 N | 111 48 33 W |
| Nelson School (historical) | School | 819 | Phillips | 48 54 44 N | 107 29 54 W |
| Nelson School (historical) | School | 713 | Roosevelt | 48 20 04 N | 104 58 26 W |
| Nelson School (historical) | School | 849 | Rosebud | 46 34 30 N | 107 03 52 W |
| Nelson School (historical) | School | 921 | Wibaux | 46 41 08 N | 104 13 46 W |
| Nelson South Canal | Canal | 674 | Phillips | 48 31 28 N | 107 30 41 W |
| Nelson South Canal | Canal | 672 | Phillips | 48 30 23 N | 107 22 53 W |
| Nelson South Number 25 Canal | Canal | 665 | Phillips | 48 28 42 N | 107 22 30 W |
| Nelson South Number 9 Canal | Canal | 670 | Phillips | 48 28 18 N | 107 22 55 W |
| Nelson Southside School (historical) | School | 925 | Chouteau | 48 06 09 N | 110 32 54 W |
| Nelson Spring | Spring | 1882 | Granite | 46 46 02 N | 113 14 22 W |
| Nelson Springs | Spring | 828 | Fergus | 47 41 41 N | 109 43 23 W |
| Nelson State Recreation Area | Park | 686 | Phillips | 48 29 26 N | 107 31 49 W |
| Nelson Washout | Valley | | Carter | 45 05 48 N | 104 38 03 W |
| Nelson's Ranch | Locale | 694 | Phillips | 48 32 33 N | 107 14 14 W |
| Nelsons Crossing (historical) | Populated Place | 1337 | Gallatin | 45 47 15 N | 111 15 08 W |
| Nelsons Dam | Dam | 758 | Valley | 48 44 24 N | 107 07 20 W |
| Nelsons Gulch (historical) | Locale | 1062 | Cascade | 47 22 32 N | 111 30 05 W |
| Nelsons Reservoir | Reservoir | 764 | Valley | 48 44 20 N | 107 08 17 W |
| Nelsons Trailer Court | Populated Place | 1457 | Gallatin | 45 41 20 N | 111 03 33 W |
| Nemesis Mountain | Summit | 2845 | Beaverhead | 44 34 49 N | 111 32 35 W |
| Nemote Creek | Stream | | Mineral | 47 03 10 N | 114 45 59 W |
| Neptune Dam | Dam | 1126 | Teton | 47 42 30 N | 111 40 45 W |
| Nerud Ranch Number 1 Dam | Dam | 764 | McCone | 47 33 48 N | 105 38 50 W |
| Nerve Reservoir | Reservoir | 781 | Phillips | 48 53 33 N | 107 34 01 W |
| Nesbit Cemetery | Locale | 1562 | Park | 45 28 31 N | 110 42 13 W |
| Nesbit Creek | Stream | | Teton | 47 52 34 N | 112 52 06 W |
| Nesbit Ranch | Locale | 1627 | Park | 45 31 51 N | 110 42 32 W |
| Nesbit School (historical) | School | 1494 | Park | 45 28 29 N | 110 40 05 W |
| Ness Number 1 Dam | Dam | 931 | Powder River | 45 45 60 N | 105 27 08 W |
| Ness School (historical) | School | 751 | Sheridan | 48 45 46 N | 104 59 42 W |
| Nessler Creek | Stream | | Blaine | 48 32 58 N | 108 53 23 W |
| Nessler School (historical) | School | 723 | Blaine | 48 33 10 N | 108 58 41 W |
| Nest Creek | Stream | | Big Horn | 45 26 38 N | 107 24 25 W |
| Nest Creek | Stream | | Powder River | 45 41 39 N | 105 26 42 W |
| Nett Ranch | Locale | 1419 | Lewis and Clark | 47 20 36 N | 112 28 44 W |
| Nettie Mine | Mine | 2003 | Beaverhead | 45 10 60 N | 112 57 03 W |
| Nettie Mine | Mine | 1702 | Silver Bow | 46 00 32 N | 112 04 29 W |
| Nettleton School (historical) | School | 913 | Petroleum | 47 17 58 N | 108 29 07 W |
| Neudorfer Church | Church | 789 | Garfield | 47 12 32 N | 106 16 38 W |
| Neufeld Coulee | Valley | | Valley | 48 17 38 N | 106 01 42 W |
| Neufeld Number 1 Dam | Dam | 897 | Valley | 48 41 54 N | 106 22 38 W |
| Neufeld Number 2 Dam | Dam | 870 | Valley | 48 39 36 N | 106 22 38 W |
| Neuhardt Coulee | Valley | | Garfield | 47 01 27 N | 106 09 51 W |
| Neuman Dam | Dam | 1157 | Cascade | 47 36 54 N | 111 31 45 W |
| Neuman Number 2 Dam | Dam | 1133 | Cascade | 47 37 48 N | 111 33 15 W |
| Neuman School | Locale | 1167 | Cascade | 47 38 23 N | 111 31 41 W |
| Neuman School (historical) | School | 1167 | Cascade | 47 38 23 N | 111 31 42 W |
| Neumann School (historical) | School | 1005 | Petroleum | 47 09 27 N | 108 43 08 W |
| Neurological and Neurosurgical Clinic | Hospital | 1723 | Silver Bow | 46 00 32 N | 112 32 28 W |
| Neuwerth Coulee | Valley | | Hill | 48 28 17 N | 109 50 13 W |
| Nevada City | Locale | 1706 | Madison | 45 18 25 N | 111 58 03 W |
| Nevada City Cemetery | Cemetery | 1711 | Madison | 45 18 39 N | 111 58 11 W |
| Nevada City Historical Marker | Park | 1699 | Madison | 45 18 28 N | 111 58 13 W |
| Nevada City Museum | Building | 1706 | Madison | 45 18 25 N | 111 58 03 W |
| Nevada City School (historical) | School | 1706 | Madison | 45 18 25 N | 111 58 03 W |
| Nevada Creek | Stream | | Meagher | 46 34 42 N | 110 17 37 W |
| Nevada Creek | Stream | | Powell | 46 53 41 N | 113 02 38 W |
| Nevada Creek Dam | Dam | 1404 | Powell | 46 48 06 N | 112 48 45 W |
| Nevada Lake | Reservoir | 1404 | Powell | 46 48 11 N | 112 48 37 W |
| Nevada Mine | Mine | 1954 | Beaverhead | 45 02 15 N | 112 35 11 W |
| Nevada Mine | Mine | 1471 | Powell | 46 56 57 N | 112 56 53 W |
| Nevada Mountain | Summit | 2525 | Powell | 46 46 17 N | 112 32 41 W |
| Nevada Narrows | Gap | 1822 | Meagher | 46 37 59 N | 110 16 48 W |
| Nevada Valley | Valley | | Powell | 46 58 33 N | 113 05 03 W |
| Never Fail Mine | Mine | 1650 | Madison | 45 31 43 N | 112 28 51 W |
| Never Laughs Mountain | Summit | 2320 | Glacier | 48 26 44 N | 113 22 54 W |
| Never Sweat Coulee | Valley | | Cascade | 47 17 04 N | 110 47 03 W |
| Never Sweat Gulch | Valley | | Broadwater | 46 42 19 N | 111 36 51 W |
| Never Sweat Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| New Apostolic Church | Church | 954 | Yellowstone | 45 53 10 N | 108 21 55 W |
| New Beginning Church of God | Church | 1363 | Park | 45 40 12 N | 110 32 38 W |
| New Calve Dam | Dam | 847 | Hill | 48 56 36 N | 110 12 15 W |
| New Castle | Mine | 2268 | Lewis and Clark | 46 26 25 N | 112 13 29 W |
| New Century School (historical) | School | 1298 | Cascade | 47 18 47 N | 111 03 38 W |
| New Chicago | Populated Place | 1231 | Granite | 46 37 37 N | 113 08 32 W |
| New Chicago (historical) | Locale | 1231 | Granite | 46 37 37 N | 113 08 32 W |
| New Chicago Post Office (historical) | Post Office | 1231 | Granite | 46 37 37 N | 113 08 32 W |
| New Chicago School (historical) | School | 1231 | Granite | 46 37 37 N | 113 08 32 W |
| New Cottage Mine | Mine | 1851 | Jefferson | 46 17 47 N | 112 13 55 W |
| New Covenant Fellowship | Church | 922 | Flathead | 48 21 60 N | 114 11 00 W |
| New Deal (historical) | Populated Place | 634 | Valley | 48 01 28 N | 106 27 53 W |
| New Deal Mine | Mine | 2537 | Madison | 45 30 18 N | 111 56 08 W |
| New Deal Mine | Mine | 2542 | Madison | 45 30 16 N | 111 56 07 W |