Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| North Fork Jackson Creek | Stream | | Lincoln | 48 28 33 N | 115 20 43 W |
| North Fork Jim Coulee | Valley | | McCone | 47 33 14 N | 106 09 42 W |
| North Fork Jocko River | Stream | | Lake | 47 12 05 N | 113 55 28 W |
| North Fork Johnny Gulch | Valley | | Broadwater | 46 11 41 N | 111 46 09 W |
| North Fork Keeler Creek | Stream | | Lincoln | 48 20 31 N | 115 53 49 W |
| North Fork Kintla Creek | Stream | 1404 | Flathead | 48 59 03 N | 114 08 17 W |
| North Fork Kirkwood Creek | Stream | | Gallatin | 44 51 06 N | 111 17 58 W |
| North Fork Klingensmith Coulee | Valley | | Teton | 47 50 06 N | 112 18 00 W |
| North Fork Lake | Lake | 2697 | Gallatin | 45 22 50 N | 111 20 09 W |
| North Fork Lee Creek | Stream | | Rosebud | 45 13 48 N | 106 23 26 W |
| North Fork Lena Creek | Stream | | Park | 46 06 21 N | 110 32 54 W |
| North Fork Lick Creek | Stream | | Lewis and Clark | 47 50 54 N | 113 00 09 W |
| North Fork Lion Coulee | Stream | | Blaine | 47 52 20 N | 109 12 23 W |
| North Fork Lisk Creek | Stream | | Richland | 47 47 31 N | 105 12 04 W |
| North Fork Little Badger Creek | Stream | | Glacier | 48 20 54 N | 113 02 11 W |
| North Fork Little Bear Skull Creek | Stream | | Powder River | 45 11 50 N | 105 22 01 W |
| North Fork Little Beaver Creek | Stream | | Valley | 48 05 33 N | 107 02 05 W |
| North Fork Little Belt Creek | Stream | | Cascade | 47 24 41 N | 110 39 28 W |
| North Fork Little Boulder River | Stream | | Jefferson | 46 11 38 N | 112 08 30 W |
| North Fork Little Creek | Stream | | Lewis and Clark | 46 59 36 N | 112 07 21 W |
| North Fork Little Joe Creek | Stream | | Mineral | 47 16 11 N | 115 08 27 W |
| North Fork Little Peoples Creek | Stream | | Blaine | 47 57 51 N | 108 39 11 W |
| North Fork Little Pipestone Creek | Stream | | Jefferson | 45 50 02 N | 112 21 20 W |
| North Fork Little Prickly Pear Creek | Stream | | Lewis and Clark | 46 47 17 N | 112 26 14 W |
| North Fork Little Thompson River | Stream | | Sanders | 47 40 51 N | 114 56 43 W |
| North Fork Little Timber Creek | Stream | | Sweet Grass | 45 56 30 N | 110 11 27 W |
| North Fork Locate Creek | Stream | | Custer | 46 22 53 N | 105 02 52 W |
| North Fork Lodge Grass Canyon | Valley | | Big Horn | 45 01 54 N | 107 42 27 W |
| North Fork Lodgepole Creek | Stream | | Garfield | 47 15 57 N | 107 41 28 W |
| North Fork Lone Tree Creek | Stream | | Garfield | 47 19 57 N | 107 12 13 W |
| North Fork Lone Tree Creek | Stream | | Richland | 47 44 39 N | 104 19 56 W |
| North Fork Lone Tree Creek | Stream | | Valley | 47 59 35 N | 106 59 40 W |
| North Fork Lost Boy Creek | Stream | | Prairie | 46 48 48 N | 105 26 20 W |
| North Fork Lost Creek | Stream | | Garfield | 47 31 50 N | 107 43 06 W |
| North Fork Lost Creek | Stream | | Lake | 47 52 23 N | 113 49 34 W |
| North Fork Lower Willow Creek | Stream | | Granite | 46 33 34 N | 113 19 05 W |
| North Fork Lyons Creek | Stream | | Lewis and Clark | 46 58 16 N | 112 12 18 W |
| North Fork Maiden Creek | Stream | | Beaverhead | 44 52 44 N | 113 15 34 W |
| North Fork Mammoth Creek | Stream | | Silver Bow | 45 46 50 N | 112 27 23 W |
| North Fork Marsh Coulee | Valley | | Treasure | 46 04 59 N | 107 25 31 W |
| North Fork Marsh Creek | Stream | | Lewis and Clark | 46 49 57 N | 112 24 59 W |
| North Fork McDonald Creek | Stream | | Fergus | 47 02 54 N | 108 48 27 W |
| North Fork McDonald Creek | Stream | | Park | 45 27 29 N | 110 34 49 W |
| North Fork McGuire Creek | Stream | | McCone | 47 36 12 N | 106 04 37 W |
| North Fork McKay Creek | Stream | | Sanders | 47 58 13 N | 115 38 32 W |
| North Fork Meadow Creek | Stream | | Lincoln | 48 47 05 N | 115 56 19 W |
| North Fork Miles Creek | Stream | | Custer | 46 05 51 N | 105 58 12 W |
| North Fork Milk River | Stream | | Glacier | 49 08 00 N | 112 23 03 W |
| North Fork Miller Creek | Stream | | Lincoln | 48 05 12 N | 115 28 45 W |
| North Fork Mission Creek | Stream | | Big Horn | 46 01 23 N | 107 33 54 W |
| North Fork Mission Creek | Stream | | Lake | 47 20 26 N | 113 55 23 W |
| North Fork Missouri Ditch | Canal | 1527 | Madison | 45 46 30 N | 111 54 50 W |
| North Fork Montgomery Gulch | Valley | | Granite | 46 17 45 N | 113 32 06 W |
| North Fork Monument Creek | Stream | | Big Horn | 45 07 54 N | 106 49 40 W |
| North Fork Moose Creek | Stream | | Silver Bow | 45 46 19 N | 112 34 24 W |
| North Fork Mud Creek | Stream | | Phillips | 48 18 13 N | 108 19 29 W |
| North Fork Muddy Creek | Stream | | Gallatin | 46 01 56 N | 110 48 22 W |
| North Fork Muddy Creek | Stream | | Teton | 47 59 30 N | 112 22 03 W |
| North Fork Murr Creek | Stream | | Flathead | 47 56 34 N | 114 55 39 W |
| North Fork Musselshell River | Stream | | Wheatland | 46 28 47 N | 110 16 21 W |
| North Fork O'Brien Creek | Stream | | Lincoln | 48 33 31 N | 115 52 28 W |
| North Fork of Dry Creek | Stream | | Fallon | 46 09 02 N | 104 20 43 W |
| North Fork of Smith River Dam | Dam | 1670 | Meagher | 46 37 24 N | 110 44 51 W |
| North Fork of Sunday Creek Bridge | Bridge | 773 | Custer | 46 30 44 N | 105 58 32 W |
| North Fork Ophir Creek | Stream | | Lewis and Clark | 46 43 08 N | 112 30 28 W |
| North Fork Otter Creek | Stream | | Sweet Grass | 46 04 57 N | 110 07 32 W |
| North Fork Owings Creek | Stream | | Ravalli | 46 13 33 N | 114 12 26 W |
| North Fork Parmenter Creek | Stream | | Lincoln | 48 22 11 N | 115 42 31 W |
| North Fork Parsnip Creek | Stream | | Lincoln | 48 40 05 N | 115 19 25 W |
| North Fork Pass Creek | Stream | | Garfield | 47 34 47 N | 106 37 32 W |
| North Fork Pine Creek | Stream | | Park | 45 30 50 N | 110 45 59 W |
| North Fork Pioneer Creek | Stream | | Beaverhead | 45 13 56 N | 113 30 55 W |
| North Fork Placid Creek | Stream | | Missoula | 47 10 14 N | 113 39 28 W |
| North Fork Plenty Creek | Stream | | Prairie | 46 55 35 N | 105 33 16 W |
| North Fork Plug Dam | Dam | 710 | Valley | 47 59 30 N | 107 00 20 W |
| North Fork Plum Creek | Stream | | Carter | 45 37 18 N | 104 07 06 W |
| North Fork Pocket Creek | Stream | | Big Horn | 45 58 11 N | 107 30 33 W |
| North Fork Poker Jim Creek | Stream | | Rosebud | 45 22 59 N | 106 24 45 W |
| North Fork Pole Creek | Stream | | Golden Valley | 46 44 03 N | 109 03 02 W |
| North Fork Porcupine Creek | Stream | | Gallatin | 45 12 13 N | 111 09 44 W |
| North Fork Porcupine Creek | Stream | | Lake | 47 51 31 N | 113 53 08 W |
| North Fork Quartz Creek | Stream | | Jefferson | 46 24 34 N | 112 08 44 W |
| North Fork Racetrack Creek | Stream | | Granite | 46 18 34 N | 113 03 34 W |
| North Fork Ramshorn Creek | Stream | | Madison | 45 27 26 N | 112 00 55 W |
| North Fork Ray Creek | Stream | | Broadwater | 46 23 27 N | 111 22 48 W |
| North Fork Red Lodge Reservoir Dam | Dam | 1669 | Carbon | 45 13 36 N | 109 10 33 W |
| North Fork Red Rock Creek | Stream | | Jefferson | 46 18 29 N | 112 21 42 W |
| North Fork Reno Creek | Stream | | Big Horn | 45 30 08 N | 107 21 49 W |
| North Fork Rickard Coulee | Valley | | Judith Basin | 46 53 13 N | 110 24 27 W |
| North Fork Rock Creek | Stream | | Granite | 46 12 46 N | 113 41 50 W |
| North Fork Rock Creek | Stream | | McCone | 47 44 43 N | 106 13 31 W |
| North Fork Rock Creek | Stream | | Meagher | 46 50 55 N | 111 31 18 W |
| North Fork Rock Springs Creek | Stream | | Powder River | 45 22 51 N | 105 39 12 W |
| North Fork Rosebud Creek | Stream | | Big Horn | 45 12 49 N | 107 00 09 W |
| North Fork Ross Creek | Stream | | Lincoln | 48 12 13 N | 115 56 30 W |
| North Fork Rotten Grass Canyon | Valley | | Big Horn | 45 07 01 N | 107 46 55 W |
| North Fork Rough Creek | Stream | | Treasure | 45 58 43 N | 107 18 40 W |
| North Fork Running Wolf Creek | Stream | | Judith Basin | 46 59 42 N | 110 23 27 W |
| North Fork Rye Creek | Stream | | Ravalli | 45 58 40 N | 114 02 20 W |
| North Fork Sage Creek | Stream | | Carbon | 45 12 41 N | 108 30 39 W |
| North Fork Sage Creek | Stream | | Judith Basin | 47 03 33 N | 110 09 39 W |
| North Fork Sage Creek | Stream | | Madison | 45 10 08 N | 112 15 44 W |
| North Fork Sage Hen Creek | Stream | | Garfield | 46 59 24 N | 107 49 54 W |
| North Fork Sand Creek | Stream | | Carbon | 45 16 04 N | 109 03 42 W |
| North Fork Sand Creek | Stream | | Powder River | 45 26 29 N | 105 27 11 W |
| North Fork Sand Creek | Stream | | Rosebud | 46 23 01 N | 106 22 18 W |
| North Fork School (historical) | School | 728 | Blaine | 48 33 41 N | 109 06 29 W |
| North Fork School (historical) | School | 767 | Phillips | 48 57 25 N | 107 51 44 W |
| North Fork Second Creek | Stream | | Custer | 46 09 33 N | 105 27 20 W |
| North Fork Second Creek | Stream | | Mineral | 47 07 39 N | 114 44 43 W |