Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Bumby Creek Mine | Mine | 1741 | Madison | 45 39 55 N | 112 09 53 W |
| Bumby Gulch | Valley | | Madison | 45 39 45 N | 112 10 51 W |
| Bumguartner Dam | Dam | 879 | Custer | 46 05 54 N | 106 03 14 W |
| Bummer Dam | Dam | 785 | Sheridan | 48 34 06 N | 104 56 02 W |
| Bunch Grass Basin | Basin | 2124 | Lewis and Clark | 47 18 33 N | 112 38 12 W |
| Bunch Grass Creek | Stream | | Lewis and Clark | 47 19 32 N | 112 37 01 W |
| Bunch Gulch | Valley | | Ravalli | 45 51 29 N | 113 54 42 W |
| Bund Gulch | Valley | | Deer Lodge | 46 10 02 N | 113 01 15 W |
| Bundane Post Office (historical) | Post Office | 927 | Fergus | 47 33 10 N | 108 45 46 W |
| Bundane School (historical) | School | 915 | Fergus | 47 31 27 N | 108 44 26 W |
| Bundy | Populated Place | 1011 | Musselshell | 46 17 34 N | 108 46 44 W |
| Bundy (historical) | Locale | 1011 | Musselshell | 46 17 34 N | 108 46 44 W |
| Bundy Park | Park | 642 | Valley | 48 12 18 N | 106 38 25 W |
| Bundy Post Office (historical) | Post Office | 1011 | Musselshell | 46 17 34 N | 108 46 44 W |
| Bundy School (historical) | School | 1011 | Musselshell | 46 17 34 N | 108 46 44 W |
| Bungalow Group | Locale | 1946 | Madison | 45 34 06 N | 111 55 09 W |
| Bungalow Lookout Trail | Trail | 2259 | Flathead | 47 48 44 N | 113 08 44 W |
| Bungalow Mountain | Summit | 2477 | Flathead | 47 47 06 N | 113 09 21 W |
| Bunker Creek | Stream | | Flathead | 47 49 47 N | 113 24 59 W |
| Bunker Hill | Mine | 1865 | Lewis and Clark | 46 28 10 N | 112 14 43 W |
| Bunker Hill | Summit | 1791 | Flathead | 47 50 22 N | 113 27 11 W |
| Bunker Hill | Summit | 1980 | Lincoln | 48 48 18 N | 115 30 19 W |
| Bunker Hill Creek | Stream | | Lincoln | 48 53 25 N | 115 39 01 W |
| Bunker Hill Mine | Mine | 1622 | Granite | 46 28 55 N | 113 18 58 W |
| Bunker Hill Mine | Mine | 1703 | Jefferson | 46 20 30 N | 112 06 08 W |
| Bunker Lake | Lake | 1921 | Flathead | 47 52 21 N | 113 39 20 W |
| Bunker Park | Flat | 1212 | Flathead | 47 48 43 N | 113 27 36 W |
| Bunkhouse Creek | Stream | | Ravalli | 46 23 03 N | 114 04 57 W |
| Bunkhouse Creek | Stream | | Ravalli | 46 02 05 N | 114 10 55 W |
| Bunn Coulee | Valley | | Garfield | 47 44 32 N | 106 41 30 W |
| Bunnell Creek | Stream | | Cascade | 47 13 04 N | 111 39 51 W |
| Bunton and Parish Stage Station (historical) | Locale | 1726 | Beaverhead | 45 14 35 N | 112 47 23 W |
| Bunyan Creek | Stream | | Lewis and Clark | 47 23 01 N | 112 49 46 W |
| Bunyan Lake | Lake | 1717 | Missoula | 47 21 27 N | 113 45 34 W |
| Bunyan Point | Summit | 2219 | Lewis and Clark | 47 23 08 N | 112 51 00 W |
| Bur Coulee | Valley | | Phillips | 47 44 17 N | 107 57 11 W |
| Burch Dam | Dam | 1062 | Carter | 45 20 36 N | 104 39 50 W |
| Burch Post Office (historical) | Post Office | 681 | McCone | 47 59 25 N | 105 28 54 W |
| Burch Ranch | Locale | 1211 | Teton | 47 44 36 N | 112 17 18 W |
| Burch School (historical) | School | 1004 | Treasure | 46 27 42 N | 107 34 50 W |
| Burd Coulee | Valley | | Glacier | 48 49 16 N | 113 03 21 W |
| Burd Hill | Bench | 1229 | Teton | 47 47 31 N | 112 14 00 W |
| Burd Hill Lake | Reservoir | 1218 | Teton | 47 46 36 N | 112 14 57 W |
| Burdette Creek | Stream | | Mineral | 46 48 31 N | 114 37 40 W |
| Burdette Creek | Stream | | Powder River | 45 19 19 N | 105 10 46 W |
| Burdick Coulee | Valley | | Garfield | 47 38 05 N | 106 51 48 W |
| Burdick Place | Populated Place | 1812 | Madison | 45 10 30 N | 112 12 48 W |
| Burditt Reservoir | Reservoir | 1056 | Carter | 45 39 51 N | 104 16 08 W |
| Burditt Spring | Spring | 1080 | Carter | 45 38 51 N | 104 13 20 W |
| Burfening Ranch | Locale | 1559 | Teton | 47 55 59 N | 112 39 00 W |
| Burfiend Station (historical) | Locale | 1530 | Beaverhead | 45 15 20 N | 112 35 03 W |
| Burg Creek | Stream | | Cascade | 46 58 26 N | 110 42 03 W |
| Burger Creek | Stream | | Madison | 45 15 32 N | 111 40 37 W |
| Burger Ditch | Canal | 1621 | Madison | 45 14 28 N | 111 39 28 W |
| Burgess Creek | Stream | | Sanders | 47 20 34 N | 114 41 00 W |
| Burgess Lake | Lake | 884 | Sanders | 47 19 59 N | 114 39 46 W |
| Burgess Memorial Baptist Church | Church | 926 | Big Horn | 45 36 06 N | 107 27 40 W |
| Burgess Number 1 Dam | Dam | 750 | Garfield | 47 32 00 N | 106 27 38 W |
| Burgess Number 2 Dam | Dam | 756 | Garfield | 47 31 42 N | 106 27 32 W |
| Burgess Ranch | Locale | 729 | Garfield | 47 28 54 N | 106 28 03 W |
| Burgess Ranch Number 1 Dam | Dam | 750 | Garfield | 47 27 42 N | 106 29 02 W |
| Burgess Ranch Number 2 Dam | Dam | 727 | Garfield | 47 31 54 N | 106 24 20 W |
| Burgess Reservoir | Reservoir | 739 | Garfield | 47 29 39 N | 106 26 03 W |
| Burgess Reservoir Dam | Dam | 759 | Garfield | 47 31 12 N | 106 29 44 W |
| Burgess Reservoir Dam | Dam | 592 | Richland | 48 01 00 N | 104 08 08 W |
| Burgeton Post Office (historical) | Post Office | 953 | Petroleum | 46 51 38 N | 108 12 50 W |
| Burgett School (historical) | School | 668 | Roosevelt | 48 15 30 N | 104 14 12 W |
| Burggraff Ranch | Locale | 1204 | Lewis and Clark | 47 11 59 N | 112 10 07 W |
| Burgoyne Post Office (historical) | Post Office | 1077 | Golden Valley | 46 17 57 N | 109 05 60 W |
| Burgoyne Siding (historical) | Locale | 1077 | Golden Valley | 46 17 57 N | 109 05 60 W |
| Burgundy Dam | Dam | 909 | Hill | 48 50 36 N | 110 35 03 W |
| Burgys Spur (historical) | Locale | 1428 | Cascade | 47 04 25 N | 110 49 08 W |
| Burke (historical) | Locale | 1036 | Pondera | 48 12 55 N | 111 55 03 W |
| Burke Creek | Stream | | Lewis and Clark | 46 59 35 N | 111 59 32 W |
| Burke Creek | Stream | | Mineral | 47 23 10 N | 115 32 40 W |
| Burke Dam | Dam | 782 | Richland | 47 44 48 N | 104 44 38 W |
| Burke Gulch | Valley | | Ravalli | 46 01 15 N | 114 09 47 W |
| Burke Hill | Summit | 1357 | Sanders | 47 34 18 N | 114 40 20 W |
| Burke Number 1 Dam | Dam | 841 | Phillips | 48 57 18 N | 107 24 44 W |
| Burke Spring | Spring | 817 | Valley | 48 28 12 N | 106 41 10 W |
| Burke Summit | Summit | 2004 | Sanders | 47 31 02 N | 115 42 42 W |
| Burkhartsmeyer Reservoir | Reservoir | 878 | Hill | 48 40 57 N | 110 22 13 W |
| Burkhartsmeyer Too Dam | Dam | 876 | Hill | 48 41 18 N | 110 23 03 W |
| Burkland Lumber Company Spur | Locale | 1354 | Park | 45 41 30 N | 110 29 53 W |
| Burley Creek | Stream | | Judith Basin | 46 45 38 N | 110 18 44 W |
| Burley Peak | Summit | 1903 | Judith Basin | 46 44 43 N | 110 18 37 W |
| Burlingame School (historical) | School | 1326 | Cascade | 47 22 28 N | 110 45 01 W |
| Burlington (historical) | Populated Place | 1696 | Silver Bow | 46 00 45 N | 112 35 33 W |
| Burlington Northern Overpass Bridge | Bridge | 699 | Phillips | 48 23 52 N | 108 14 37 W |
| Burlington Northern Plaza | Park | 984 | Missoula | 46 52 27 N | 113 59 23 W |
| Burlington Post Office (historical) | Post Office | 1696 | Silver Bow | 46 00 45 N | 112 35 33 W |
| Burlington School (historical) | School | 1696 | Silver Bow | 46 00 45 N | 112 35 33 W |
| Burn Gulch | Valley | | Missoula | 46 44 38 N | 113 39 18 W |
| Burn Top Mountain | Summit | 2278 | Lewis and Clark | 47 30 18 N | 112 48 28 W |
| Burned Creek | Stream | | Lewis and Clark | 47 30 46 N | 112 53 49 W |
| Burned Point | Cape | 2312 | Lewis and Clark | 47 10 31 N | 112 27 40 W |
| Burnett Creek | Stream | | Valley | 48 37 36 N | 106 57 01 W |
| Burnett Flats | Flat | 733 | Valley | 48 04 11 N | 107 07 58 W |
| Burnett Ranch | Locale | 1580 | Carbon | 45 17 37 N | 109 26 45 W |
| Burnett Ranch Cemetery | Cemetery | 1580 | Carbon | 45 17 37 N | 109 26 45 W |
| Burnette Creek | Stream | | Fergus | 47 06 16 N | 109 27 17 W |
| Burnette Peak | Summit | 1776 | Fergus | 47 09 03 N | 109 21 13 W |
| Burnham | Locale | 802 | Hill | 48 33 39 N | 109 53 12 W |
| Burnham | Populated Place | 802 | Hill | 48 33 39 N | 109 53 12 W |
| Burnham Post Office (historical) | Post Office | 802 | Hill | 48 33 39 N | 109 53 12 W |
| Burnham School (historical) | School | 802 | Hill | 48 33 39 N | 109 53 12 W |
| Burning Coal Mine | Locale | 745 | Dawson | 47 07 25 N | 104 36 14 W |
| Burning Coal Vein Area | Locale | 979 | Rosebud | 45 40 07 N | 106 22 50 W |
| Burning Creek | Stream | | Rosebud | 45 39 52 N | 106 21 45 W |
| Burnison Maternity Hospital (historical) | Hospital | 609 | Roosevelt | 48 05 26 N | 105 38 26 W |