Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Planaria Lake | Lake | 3054 | Carbon | 45 03 27 N | 109 43 24 W |
| Planet Creek | Stream | | Ravalli | 45 49 45 N | 114 03 18 W |
| Plant Creek | Stream | | Missoula | 46 43 19 N | 113 54 31 W |
| Plant Growth Center | Building | 1488 | Gallatin | 45 40 07 N | 111 03 12 W |
| Plateau | Locale | 912 | Mineral | 47 00 20 N | 114 32 49 W |
| Plateau Creek | Stream | | Carbon | 45 04 44 N | 109 25 55 W |
| Platinum Ski Trail | Trail | 2175 | Granite | 46 15 23 N | 113 14 31 W |
| Playfair Park | Park | 971 | Missoula | 46 50 35 N | 114 00 54 W |
| Pleasant Creek | Stream | | Big Horn | 45 53 34 N | 107 07 18 W |
| Pleasant Hill School (historical) | School | 846 | Phillips | 48 28 51 N | 108 13 16 W |
| Pleasant Hill School (historical) | School | 796 | Rosebud | 46 10 25 N | 106 28 50 W |
| Pleasant Island | Island | 1019 | Flathead | 48 09 59 N | 114 21 22 W |
| Pleasant Park Mobile Home Court | Populated Place | 1012 | Cascade | 47 28 42 N | 111 18 28 W |
| Pleasant Plains School (historical) | School | 847 | Dawson | 47 27 24 N | 104 44 50 W |
| Pleasant Plains School (historical) | School | 1208 | Fergus | 47 06 48 N | 109 02 58 W |
| Pleasant Prairie | Populated Place | 763 | Daniels | 48 35 32 N | 105 04 57 W |
| Pleasant Prairie Cemetery | Cemetery | 767 | Daniels | 48 33 49 N | 105 05 16 W |
| Pleasant Prairie Community Hall | Building | 762 | Daniels | 48 35 30 N | 105 04 07 W |
| Pleasant Prairie Lutheran Church | Church | 767 | Daniels | 48 33 49 N | 105 05 11 W |
| Pleasant Ridge School (historical) | School | 1051 | Prairie | 47 07 57 N | 105 33 02 W |
| Pleasant School (historical) | School | 1177 | Teton | 47 46 14 N | 111 32 11 W |
| Pleasant Valley | Valley | | Judith Basin | 47 02 29 N | 110 10 07 W |
| Pleasant Valley | Valley | | Lincoln | 48 09 11 N | 115 05 56 W |
| Pleasant Valley (historical) | Locale | 1070 | Flathead | 48 10 60 N | 114 54 04 W |
| Pleasant Valley (historical) | Populated Place | 897 | Chouteau | 47 56 60 N | 110 41 03 W |
| Pleasant Valley (historical) | Populated Place | 606 | McCone | 48 03 25 N | 105 34 52 W |
| Pleasant Valley Campground | Locale | 934 | Lincoln | 48 02 31 N | 115 17 29 W |
| Pleasant Valley Canal | Canal | 1671 | Carbon | 45 13 05 N | 109 13 50 W |
| Pleasant Valley Colony | Populated Place | 1232 | Cascade | 47 21 25 N | 111 05 03 W |
| Pleasant Valley Community Hall | Locale | 606 | McCone | 48 03 27 N | 105 34 50 W |
| Pleasant Valley Creek | Stream | | Flathead | 48 10 04 N | 115 00 20 W |
| Pleasant Valley Ditch | Canal | 1426 | Carbon | 45 20 27 N | 109 18 39 W |
| Pleasant Valley Ditch | Canal | 1342 | Jefferson | 45 49 49 N | 112 08 52 W |
| Pleasant Valley Fisher River | Stream | | Lincoln | 48 01 33 N | 115 21 09 W |
| Pleasant Valley Lutheran (historical) | Church | 683 | Sheridan | 48 58 07 N | 104 08 07 W |
| Pleasant Valley Mountain | Summit | 1736 | Flathead | 48 12 30 N | 114 44 52 W |
| Pleasant Valley Park | Flat | 938 | Lincoln | 48 02 46 N | 115 16 43 W |
| Pleasant Valley Post Office (historical) | Post Office | 1070 | Flathead | 48 10 60 N | 114 54 04 W |
| Pleasant Valley School | School | 1596 | Cascade | 47 10 47 N | 110 49 13 W |
| Pleasant Valley School | School | 1081 | Flathead | 48 08 59 N | 114 57 23 W |
| Pleasant Valley School (historical) | School | 966 | Blaine | 48 57 33 N | 108 54 31 W |
| Pleasant Valley School (historical) | School | 816 | Dawson | 47 28 17 N | 104 55 06 W |
| Pleasant Valley School (historical) | School | 847 | Rosebud | 46 14 46 N | 106 39 35 W |
| Pleasant Valley School (historical) | School | 658 | Sheridan | 48 58 58 N | 104 04 60 W |
| Pleasant Valley School (historical) | School | 742 | Valley | 48 15 07 N | 106 05 32 W |
| Pleasant Valley School (historical) | School | 1163 | Yellowstone | 45 56 41 N | 108 51 32 W |
| Pleasant View | Populated Place | 764 | Dawson | 47 02 10 N | 104 55 48 W |
| Pleasant View Cemetery | Cemetery | 1098 | Cascade | 47 22 20 N | 110 54 35 W |
| Pleasant View Cemetery | Cemetery | 763 | Dawson | 47 02 10 N | 104 55 47 W |
| Pleasant View Cemetery | Cemetery | 896 | Lake | 47 18 30 N | 114 07 07 W |
| Pleasant View Cemetery | Cemetery | 626 | McCone | 48 02 59 N | 105 18 05 W |
| Pleasant View Community Center | Locale | 882 | Daniels | 48 34 42 N | 105 54 38 W |
| Pleasant View Flat | Flat | 763 | Dawson | 47 03 41 N | 104 54 60 W |
| Pleasant View Mine | Mine | 1272 | Ravalli | 46 23 17 N | 114 13 50 W |
| Pleasant View Mountain | Summit | 1847 | Lincoln | 48 41 49 N | 115 46 44 W |
| Pleasant View School (historical) | School | 757 | Blaine | 48 41 02 N | 109 15 33 W |
| Pleasant View School (historical) | School | 1135 | Chouteau | 47 46 13 N | 111 19 14 W |
| Pleasant View School (historical) | School | 763 | Dawson | 47 02 10 N | 104 55 47 W |
| Pleasant View School (historical) | School | 1301 | Fergus | 46 56 25 N | 109 41 33 W |
| Pleasant View School (historical) | School | 1067 | Fergus | 47 20 44 N | 109 44 43 W |
| Pleasant View School (historical) | School | 1090 | Fergus | 47 35 02 N | 109 47 39 W |
| Pleasant View School (historical) | School | 1633 | Park | 45 53 11 N | 110 29 38 W |
| Pleasant View School (historical) | School | 821 | Phillips | 48 14 50 N | 107 43 00 W |
| Pleasant View School (historical) | School | 793 | Prairie | 46 42 04 N | 105 16 52 W |
| Pleasant View School (historical) | School | 687 | Roosevelt | 48 12 30 N | 104 33 25 W |
| Pleasant View School (historical) | School | 938 | Valley | 48 54 28 N | 106 27 28 W |
| Pleasant View School (historical) | School | 861 | Valley | 48 24 25 N | 105 50 14 W |
| Pleiades Lakes | Lake | 3013 | Carbon | 45 03 13 N | 109 38 33 W |
| Pleideus Mine | Mine | 2077 | Deer Lodge | 46 12 48 N | 113 14 26 W |
| Plenty Coups High School | School | 1241 | Big Horn | 45 25 44 N | 108 31 57 W |
| Plenty Creek | Stream | | Prairie | 46 53 34 N | 105 31 57 W |
| Plentywood | Locale | 624 | Sheridan | 48 46 25 N | 104 33 37 W |
| Plentywood | Populated Place | 624 | Sheridan | 48 46 29 N | 104 33 45 W |
| Plentywood Bench Lutheran Church (historical) | Church | 708 | Sheridan | 48 49 27 N | 104 44 02 W |
| Plentywood Can-Am RV Park | Locale | 625 | Sheridan | 48 46 44 N | 104 33 13 W |
| Plentywood Cemetery | Cemetery | 649 | Sheridan | 48 46 50 N | 104 32 50 W |
| Plentywood Creek | Stream | | Sheridan | 48 46 47 N | 104 39 32 W |
| Plentywood Fire Department | Building | 624 | Sheridan | 48 46 29 N | 104 33 40 W |
| Plentywood Golf Club | Locale | 649 | Sheridan | 48 47 03 N | 104 33 58 W |
| Plentywood Lutheran Parish | Church | 623 | Sheridan | 48 46 23 N | 104 33 20 W |
| Plentywood Memorial Cemetery | Cemetery | 674 | Sheridan | 48 47 13 N | 104 32 02 W |
| Plentywood Police Department | Building | 628 | Sheridan | 48 46 43 N | 104 33 23 W |
| Plentywood Post Office | Post Office | 624 | Sheridan | 48 46 32 N | 104 33 28 W |
| Plentywood School | School | 626 | Sheridan | 48 46 43 N | 104 33 18 W |
| Plentywood Seventh Day Adventist Church | Church | 629 | Sheridan | 48 46 45 N | 104 33 51 W |
| Plentywood Sewage Lagoon Dam | Dam | 607 | Sheridan | 48 44 54 N | 104 32 20 W |
| Plentywood Vision Center | Hospital | 624 | Sheridan | 48 46 30 N | 104 33 28 W |
| Plethora Dam | Dam | 860 | Phillips | 48 32 42 N | 108 11 02 W |
| Plevna | Locale | 851 | Fallon | 46 24 55 N | 104 31 04 W |
| Plevna | Populated Place | 856 | Fallon | 46 25 05 N | 104 31 14 W |
| Plevna Baptist Church | Church | 855 | Fallon | 46 25 06 N | 104 31 15 W |
| Plevna City Park | Park | 851 | Fallon | 46 24 58 N | 104 31 01 W |
| Plevna Fire Department | Building | 857 | Fallon | 46 25 04 N | 104 31 04 W |
| Plevna Post Office | Post Office | 855 | Fallon | 46 25 01 N | 104 31 04 W |
| Plevna School | School | 853 | Fallon | 46 25 09 N | 104 31 04 W |
| Plew Physical Plant | Building | 1500 | Gallatin | 45 39 53 N | 111 02 43 W |
| Plimpton Creek | Stream | | Beaverhead | 45 44 07 N | 113 24 23 W |
| Ploss Ranch | Locale | 1029 | Liberty | 48 42 22 N | 111 02 04 W |
| Pluffe Cemetery | Cemetery | 908 | Sanders | 47 29 02 N | 114 41 06 W |
| Pluhar Airport | Airport | 821 | Garfield | 47 08 14 N | 106 29 19 W |
| Pluhar Number 1 Dam | Dam | 815 | Garfield | 47 05 24 N | 106 31 32 W |
| Pluhar Number 2 Dam | Dam | 815 | Garfield | 47 04 24 N | 106 31 38 W |
| Pluhar School (historical) | School | 826 | Garfield | 47 08 05 N | 106 29 12 W |
| Plum Coulee | Valley | | Dawson | 47 16 09 N | 104 48 52 W |
| Plum Coulee | Valley | | Powder River | 45 17 05 N | 105 51 11 W |
| Plum Coulee | Valley | | Prairie | 46 44 56 N | 104 45 40 W |
| Plum Coulee | Valley | | Prairie | 46 49 12 N | 105 06 38 W |
| Plum Coulee | Valley | | Valley | 47 45 32 N | 107 19 38 W |
| Plum Creek | Stream | | Big Horn | 45 49 36 N | 107 18 49 W |
| Plum Creek | Stream | | Carter | 45 38 59 N | 103 56 17 W |