Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Seventeen Reservoir | Reservoir | 686 | Valley | 47 55 26 N | 106 51 19 W |
| Seventeenmile Creek | Stream | | Lincoln | 48 40 41 N | 115 51 12 W |
| Seventeenth Green Ski Trail | Trail | 2365 | Madison | 45 16 51 N | 111 24 24 W |
| Seventh Cavalry Memorial | Park | 1006 | Big Horn | 45 34 13 N | 107 25 38 W |
| Seventh Coulee | Valley | | Valley | 47 48 43 N | 106 43 05 W |
| Seventh Day Adventist Church | Church | 1556 | Beaverhead | 45 12 56 N | 112 38 30 W |
| Seventh Day Adventist Church | Church | 1121 | Carbon | 45 17 34 N | 108 54 57 W |
| Seventh Day Adventist Church | Church | 1027 | Cascade | 47 30 16 N | 111 17 03 W |
| Seventh Day Adventist Church | Church | 722 | Custer | 46 24 39 N | 105 49 54 W |
| Seventh Day Adventist Church | Church | 633 | Dawson | 47 06 18 N | 104 42 22 W |
| Seventh Day Adventist Church | Church | 1196 | Fergus | 47 03 59 N | 109 25 51 W |
| Seventh Day Adventist Church | Church | 931 | Flathead | 48 12 50 N | 114 19 43 W |
| Seventh Day Adventist Church | Church | 942 | Flathead | 48 22 37 N | 114 10 38 W |
| Seventh Day Adventist Church | Church | 1470 | Gallatin | 45 40 49 N | 111 03 24 W |
| Seventh Day Adventist Church | Church | 1493 | Jefferson | 46 13 60 N | 112 07 14 W |
| Seventh Day Adventist Church | Church | 934 | Lake | 47 31 24 N | 114 05 57 W |
| Seventh Day Adventist Church | Church | 1305 | Lewis and Clark | 46 34 35 N | 112 00 13 W |
| Seventh Day Adventist Church | Church | 641 | Lincoln | 48 24 13 N | 115 31 52 W |
| Seventh Day Adventist Church | Church | 1537 | Meagher | 46 32 54 N | 110 54 08 W |
| Seventh Day Adventist Church | Church | 841 | Mineral | 47 10 60 N | 114 52 23 W |
| Seventh Day Adventist Church | Church | 973 | Missoula | 46 50 58 N | 114 00 36 W |
| Seventh Day Adventist Church | Church | 1379 | Park | 45 37 60 N | 110 34 36 W |
| Seventh Day Adventist Church | Church | 1107 | Ravalli | 46 14 50 N | 114 11 03 W |
| Seventh Day Adventist Church | Church | 876 | Sanders | 47 36 25 N | 114 40 28 W |
| Seventh Day Adventist Church | Church | 1788 | Silver Bow | 46 00 01 N | 112 28 30 W |
| Seventh Day Adventist Church | Church | 1250 | Sweet Grass | 45 49 60 N | 109 57 03 W |
| Seventh Day Adventist Church | Church | 1164 | Teton | 47 48 57 N | 112 10 31 W |
| Seventh Day Adventist Church | Church | 1003 | Toole | 48 30 44 N | 111 51 24 W |
| Seventh Day Adventist Church | Church | 647 | Valley | 48 12 30 N | 106 38 24 W |
| Seventh Day Adventist Church (historical) | Church | 810 | McCone | 47 14 19 N | 106 02 08 W |
| Seventh Day Adventist School | School | 1107 | Ravalli | 46 14 50 N | 114 11 03 W |
| Seventh Heaven Ski Trail | Trail | 1175 | Lincoln | 48 36 18 N | 115 37 50 W |
| Seventh Point Buttes | Summit | 803 | Valley | 47 49 54 N | 106 41 39 W |
| Seventh Point Coulee | Valley | | Valley | 47 49 15 N | 106 42 59 W |
| Seventh Reservoir | Reservoir | 719 | Valley | 47 53 18 N | 106 48 19 W |
| Seventh Ridge | Ridge | 837 | Valley | 47 49 31 N | 106 47 42 W |
| Seventy Nine Coulee | Valley | | Fergus | 47 37 56 N | 109 38 08 W |
| Seventy Nine Creek | Stream | | Garfield | 47 17 20 N | 107 49 35 W |
| Seventy-Nine School (historical) | School | 843 | Petroleum | 47 19 40 N | 108 02 52 W |
| Seventynine (historical) | Populated Place | 1166 | Golden Valley | 46 08 55 N | 109 17 26 W |
| Seventynine Coulee | Valley | | Garfield | 47 17 32 N | 107 49 09 W |
| Seventynine Coulee | Valley | | Musselshell | 46 42 55 N | 107 49 35 W |
| Seventynine Hill | Summit | 844 | Fergus | 47 38 01 N | 109 37 44 W |
| Seventynine Post Office (historical) | Post Office | 1166 | Golden Valley | 46 08 59 N | 109 16 41 W |
| Seventynine Ranch | Locale | 777 | Fergus | 47 38 58 N | 109 38 34 W |
| Seventynine Spring | Spring | 934 | Garfield | 47 05 16 N | 106 48 35 W |
| Seventynine Spring | Spring | 970 | Rosebud | 46 44 07 N | 107 32 46 W |
| Seventyone Ranch | Locale | 1529 | Meagher | 46 25 59 N | 110 23 41 W |
| Seventysix Creek | Stream | | Big Horn | 45 02 05 N | 106 21 20 W |
| Seventytwo Bench | Bench | 1159 | Fergus | 47 18 20 N | 109 38 51 W |
| Seventytwo Hills | Summit | 1165 | Fergus | 47 19 33 N | 109 36 08 W |
| Severn Gulch | Valley | | Lincoln | 48 21 46 N | 115 24 16 W |
| Severson Number 2 Dam | Dam | 839 | Custer | 46 14 48 N | 105 32 38 W |
| Severson Number 3 Dam | Dam | 872 | Custer | 46 15 48 N | 105 31 02 W |
| Severson Number 4 Dam | Dam | 975 | Garfield | 46 58 54 N | 107 15 14 W |
| Seville Colony | Populated Place | 1195 | Glacier | 48 41 46 N | 112 34 53 W |
| Seville Community Hall | Locale | 1210 | Glacier | 48 37 42 N | 112 29 54 W |
| Seville Flat | Flat | 1230 | Glacier | 48 37 04 N | 112 33 53 W |
| Seville Post Office (historical) | Post Office | 1217 | Glacier | 48 38 02 N | 112 32 01 W |
| Seward Mountain | Summit | 2711 | Glacier | 48 52 15 N | 113 40 50 W |
| Sex Peak | Summit | 1753 | Sanders | 47 43 24 N | 115 38 47 W |
| Sex Peak Lookout Station | Locale | 1761 | Sanders | 47 43 23 N | 115 38 40 W |
| Sexton Coal Mines | Mine | 930 | Chouteau | 47 51 14 N | 110 06 34 W |
| Sexton Glacier | Glacier | 2226 | Glacier | 48 42 06 N | 113 38 06 W |
| Sexton Post Office (historical) | Post Office | 1391 | Gallatin | 45 51 50 N | 111 04 53 W |
| Seybold Spring | Spring | 2151 | Beaverhead | 44 33 09 N | 112 43 10 W |
| Seybold Spring | Spring | 2430 | Beaverhead | 44 46 60 N | 112 12 57 W |
| Seyler-Tash Ditch | Canal | 1437 | Madison | 45 30 15 N | 112 17 60 W |
| Seymore Mountain | Summit | 2711 | Beaverhead | 45 31 17 N | 113 08 52 W |
| Seymour Campground | Locale | 2063 | Deer Lodge | 45 59 12 N | 113 11 03 W |
| Seymour Creek | Stream | | Deer Lodge | 45 52 58 N | 113 08 36 W |
| Seymour Reservoir | Reservoir | 785 | Phillips | 48 05 09 N | 108 00 52 W |
| Seymour Reservoir | Reservoir | 1136 | Powder River | 45 14 34 N | 106 02 06 W |
| Seymour Reservoir Dam | Dam | 785 | Phillips | 48 05 12 N | 108 00 56 W |
| Sha Ron Fishing Access Site | Locale | 983 | Missoula | 46 52 51 N | 113 56 08 W |
| Shack Creek | Stream | | Richland | 47 59 06 N | 104 42 52 W |
| Shack Town School (historical) | School | 1130 | Cascade | 47 23 11 N | 111 11 08 W |
| Shad Spring | Spring | 807 | Prairie | 46 42 03 N | 104 51 29 W |
| Shade Creek | Stream | | McCone | 47 49 35 N | 105 52 07 W |
| Shadoan Sawmill | Locale | 1706 | Gallatin | 45 39 34 N | 110 52 24 W |
| Shadow Lake | Lake | 2920 | Carbon | 45 06 05 N | 109 35 09 W |
| Shadow Lake | Lake | 2568 | Carbon | 45 11 48 N | 109 40 25 W |
| Shadow Lake | Lake | 2188 | Flathead | 47 55 13 N | 113 10 42 W |
| Shadow Lake | Lake | 2172 | Madison | 45 18 14 N | 111 29 08 W |
| Shadow Lake | Lake | 2348 | Ravalli | 46 01 54 N | 113 45 08 W |
| Shadow Mountain | Summit | 2327 | Flathead | 47 54 49 N | 113 10 17 W |
| Shadwell Creek | Stream | | Richland | 47 30 43 N | 104 15 06 W |
| Shadwell Creek | Stream | | Richland | 47 30 43 N | 104 15 05 W |
| Shady Grove Campground | Locale | 1201 | Glacier | 48 37 25 N | 112 26 58 W |
| Shady Grove RV Park | Locale | 885 | Sanders | 47 36 25 N | 114 40 48 W |
| Shady Lane Dam | Dam | 728 | McCone | 47 45 48 N | 106 00 08 W |
| Shady Lane Mobile Home Park | Populated Place | 888 | Flathead | 48 13 25 N | 114 15 40 W |
| Shady Lane Ski Trail | Trail | 1816 | Lewis and Clark | 46 45 12 N | 112 18 50 W |
| Shady Rest Camp | Locale | 1899 | Gallatin | 45 17 26 N | 111 12 55 W |
| Shady Rest Reservoir | Reservoir | 1226 | Powder River | 45 11 48 N | 105 55 33 W |
| Shady Rest RV Park | Locale | 657 | Valley | 48 11 43 N | 106 37 20 W |
| Shady Spring | Spring | 1137 | Carter | 45 50 48 N | 104 27 23 W |
| Shafer Creek | Stream | | Lincoln | 48 33 56 N | 115 34 06 W |
| Shaft House Creek | Stream | | Park | 45 03 17 N | 110 42 53 W |
| Shaft Near Lombard Mine | Mine | 1208 | Broadwater | 46 05 30 N | 111 23 33 W |
| Shafthouse Hill Mine | Mine | 1443 | Gallatin | 45 55 17 N | 111 57 53 W |
| Shag Dam | Dam | 818 | Valley | 47 57 00 N | 107 14 20 W |
| Shaheeya Lake | Lake | 2156 | Glacier | 48 57 22 N | 113 57 32 W |
| Shaheeya Peak | Summit | 2445 | Glacier | 48 57 21 N | 113 58 23 W |
| Shake Spring | Spring | 1022 | Fergus | 47 37 09 N | 109 47 22 W |
| Shakeford Homestead | Locale | 2005 | Madison | 44 45 51 N | 111 40 12 W |
| Shakelford Cow Camp | Locale | 2013 | Madison | 44 45 48 N | 111 40 32 W |
| Shakesphere Mine | Mine | 1660 | Granite | 46 15 60 N | 113 29 18 W |
| Shaky Spring | Spring | 1600 | Madison | 45 43 24 N | 112 07 55 W |
| Shaky Spring Mine | Mine | 1554 | Madison | 45 43 20 N | 112 08 08 W |