Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| South Branch Fox Brook | Stream | | Aroostook | 46 47 15 N | 068 48 42 W |
| South Branch Lake | Lake | 69 | Penobscot | 45 23 07 N | 068 40 58 W |
| South Branch Little Musquash Stream | Stream | | Washington | 45 06 30 N | 067 45 02 W |
| South Branch Machias River | Stream | | Aroostook | 46 32 20 N | 068 36 39 W |
| South Branch Mad River | Stream | | Oxford | 44 17 10 N | 071 00 22 W |
| South Branch Marsh River | Stream | | Waldo | 44 35 52 N | 068 51 22 W |
| South Branch McConnell Brook | Stream | | Aroostook | 46 35 05 N | 068 34 53 W |
| South Branch Medunkeunk Stream | Stream | | Penobscot | 45 28 23 N | 068 33 41 W |
| South Branch Meduxnekeag River | Stream | | Aroostook | 46 06 08 N | 067 52 16 W |
| South Branch Meduxnekeag River Reservoir | Reservoir | 127 | Aroostook | 46 03 12 N | 067 52 04 W |
| South Branch Meduxnekeag Stream | Stream | | Aroostook | 45 58 31 N | 067 55 48 W |
| South Branch Moose River | Stream | | Franklin | 45 31 33 N | 070 35 24 W |
| South Branch Mountain | Summit | 793 | Piscataquis | 46 05 25 N | 068 54 50 W |
| South Branch Norris Brook | Stream | | Somerset | 46 02 59 N | 070 06 59 W |
| South Branch Otter Brook | Stream | | Aroostook | 46 28 11 N | 068 30 31 W |
| South Branch Palmer Stream | Stream | | Somerset | 45 09 13 N | 069 43 37 W |
| South Branch Penobscot River | Stream | | Somerset | 45 53 29 N | 069 57 06 W |
| South Branch Pond Campground | Locale | 379 | Piscataquis | 46 01 29 N | 068 53 58 W |
| South Branch Ponds Brook | Stream | | Piscataquis | 46 07 56 N | 068 55 29 W |
| South Branch Rolfe Brook | Stream | | Washington | 45 10 06 N | 067 51 05 W |
| South Branch Russell Brook | Stream | | Piscataquis | 46 23 35 N | 069 28 43 W |
| South Branch Sandy River | Stream | | Franklin | 44 50 56 N | 070 26 05 W |
| South Branch Soper Brook | Stream | | Piscataquis | 46 22 08 N | 069 13 37 W |
| South Branch Spruce Brook | Stream | | Somerset | 46 11 51 N | 069 48 49 W |
| South Branch Stream | Stream | | Penobscot | 45 24 01 N | 068 38 12 W |
| South Branch Stroudwater River | Stream | | Cumberland | 43 38 32 N | 070 25 30 W |
| South Branch Sunday River | Stream | | Oxford | 44 28 55 N | 070 57 22 W |
| South Branch Three Brooks | Stream | | Aroostook | 46 28 30 N | 067 52 11 W |
| South Branch Trail | Trail | 526 | Piscataquis | 45 56 36 N | 068 52 43 W |
| South Branch Trout Brook | Stream | | Piscataquis | 46 06 29 N | 068 59 29 W |
| South Branch Twomile Brook | Stream | | Aroostook | 47 00 05 N | 069 29 25 W |
| South Branch Vickery Brook | Stream | | Washington | 45 20 25 N | 067 44 12 W |
| South Branch Wadleigh Brook | Stream | | Penobscot | 46 18 41 N | 068 35 49 W |
| South Branch Wassataquoik Stream | Stream | | Piscataquis | 45 59 06 N | 068 53 18 W |
| South Branch West Twin Brook | Stream | | Aroostook | 47 01 54 N | 069 06 13 W |
| South Branch Whitney Brook | Stream | | Aroostook | 46 24 26 N | 067 51 07 W |
| South Breaker | Bar | -4 | Knox | 43 47 32 N | 068 53 24 W |
| South Breaker | Bar | 0 | Knox | 43 58 19 N | 069 07 18 W |
| South Brewer | Populated Place | 5 | Penobscot | 44 46 13 N | 068 46 48 W |
| South Bridge | Bridge | 36 | Androscoggin | 44 05 22 N | 070 13 16 W |
| South Bridgton | Populated Place | 202 | Cumberland | 43 59 29 N | 070 42 29 W |
| South Bridgton Congregational Church | Church | 219 | Cumberland | 43 59 19 N | 070 42 21 W |
| South Bristol | Populated Place | 13 | Lincoln | 43 51 50 N | 069 33 40 W |
| South Bristol Elementary School | School | 41 | Lincoln | 43 52 05 N | 069 33 35 W |
| South Bristol Town House | Building | 16 | Lincoln | 43 55 58 N | 069 34 12 W |
| South Brook | Stream | | Aroostook | 46 19 30 N | 067 55 48 W |
| South Brook | Stream | | Franklin | 45 06 04 N | 070 11 48 W |
| South Brook | Stream | | Oxford | 45 02 45 N | 070 51 39 W |
| South Brook | Stream | | Piscataquis | 45 30 31 N | 069 28 03 W |
| South Brook | Stream | | Piscataquis | 46 04 55 N | 069 37 32 W |
| South Brook | Stream | | Piscataquis | 45 35 40 N | 069 31 02 W |
| South Brook | Stream | | Washington | 45 07 31 N | 067 46 14 W |
| South Brooksville | Populated Place | 10 | Hancock | 44 20 30 N | 068 44 21 W |
| South Brother | Summit | 1207 | Piscataquis | 45 56 39 N | 069 00 06 W |
| South Bubble | Summit | 183 | Hancock | 44 20 19 N | 068 15 15 W |
| South Bubble Trail | Trail | 178 | Hancock | 44 20 39 N | 068 15 14 W |
| South Bunker Ledge | Bar | -9 | Hancock | 44 13 57 N | 068 16 58 W |
| South Bunker Ledge | Cliff | -7 | Hancock | 44 13 36 N | 068 16 58 W |
| South Buxton | Populated Place | 56 | Cumberland | 43 37 14 N | 070 28 43 W |
| South Casco | Populated Place | 98 | Cumberland | 43 54 53 N | 070 31 04 W |
| South Cemetery | Cemetery | 74 | Somerset | 44 45 23 N | 069 43 14 W |
| South China | Populated Place | 67 | Kennebec | 44 23 44 N | 069 34 16 W |
| South Congregational Church | Church | 1 | York | 43 21 46 N | 070 28 39 W |
| South Corinth | Populated Place | 89 | Penobscot | 44 58 08 N | 068 58 26 W |
| South Cove | Bay | 463 | Franklin | 44 55 41 N | 070 41 48 W |
| South Cove | Bay | 98 | Piscataquis | 45 16 00 N | 069 17 26 W |
| South Cove | Bay | 341 | Piscataquis | 45 29 24 N | 069 29 02 W |
| South Cove Point | Cape | 98 | Piscataquis | 45 16 42 N | 069 17 56 W |
| South Crocker Mountain | Summit | 1218 | Franklin | 45 02 10 N | 070 22 35 W |
| South Crooked Brook | Stream | | Washington | 45 35 45 N | 067 49 00 W |
| South Cushing | Populated Place | 9 | Knox | 43 59 40 N | 069 16 50 W |
| South Deer Isle | Populated Place | 24 | Hancock | 44 11 38 N | 068 39 45 W |
| South Dover | Populated Place | 159 | Piscataquis | 45 08 36 N | 069 08 16 W |
| South Dover Cemetery | Cemetery | 162 | Piscataquis | 45 08 28 N | 069 07 58 W |
| South Dresden | Populated Place | 32 | Lincoln | 44 02 57 N | 069 46 19 W |
| South Durham | Populated Place | 88 | Androscoggin | 43 56 31 N | 070 04 27 W |
| South Effingham | Populated Place | 165 | York | 43 42 07 N | 070 58 54 W |
| South Eliot | Populated Place | 10 | York | 43 06 29 N | 070 46 39 W |
| South Eliot Methodist Church | Church | 6 | York | 43 06 26 N | 070 46 45 W |
| South Exeter | Populated Place | 115 | Penobscot | 44 56 38 N | 069 08 18 W |
| South Face Trail | Trail | 240 | Hancock | 44 17 46 N | 068 22 34 W |
| South Freeport | Populated Place | 25 | Cumberland | 43 49 11 N | 070 06 34 W |
| South Freeport Cemetery | Cemetery | 31 | Cumberland | 43 49 43 N | 070 06 45 W |
| South Freeport Church | Church | 22 | Cumberland | 43 49 22 N | 070 06 45 W |
| South Freeport Post Office | Post Office | 21 | Cumberland | 43 49 24 N | 070 06 40 W |
| South Gardiner | Populated Place | 23 | Kennebec | 44 10 48 N | 069 45 24 W |
| South Gardiner Cemetery | Cemetery | 11 | Kennebec | 44 11 04 N | 069 45 29 W |
| South Gate Brook | Stream | | Penobscot | 45 02 48 N | 069 00 23 W |
| South Gorham | Populated Place | 37 | Cumberland | 43 38 28 N | 070 25 12 W |
| South Gorham Baptist Church | Church | 37 | Cumberland | 43 38 28 N | 070 24 58 W |
| South Gorham Cemetery | Cemetery | 39 | Cumberland | 43 38 22 N | 070 25 04 W |
| South Gorham Mountain Trail | Trail | 121 | Hancock | 44 19 24 N | 068 11 29 W |
| South Gouldsboro | Populated Place | 39 | Hancock | 44 25 47 N | 068 06 27 W |
| South Gray | Populated Place | 107 | Cumberland | 43 50 55 N | 070 19 18 W |
| South Hammond Brook | Stream | | Oxford | 45 01 54 N | 071 01 51 W |
| South Hancock | Populated Place | 24 | Hancock | 44 30 02 N | 068 15 18 W |
| South Harpswell | Populated Place | 3 | Cumberland | 43 44 30 N | 070 00 52 W |
| South Harrison Cemetery | Cemetery | 157 | Cumberland | 44 03 14 N | 070 37 06 W |
| South Harrison School | School | 134 | Cumberland | 44 02 37 N | 070 36 42 W |
| South Hill | Summit | 199 | Oxford | 44 14 56 N | 070 19 35 W |
| South Hiram | Populated Place | 116 | Oxford | 43 48 46 N | 070 52 39 W |
| South Hiram Elementary School | School | 116 | Oxford | 43 48 41 N | 070 52 42 W |
| South Hollis | Populated Place | 82 | York | 43 34 11 N | 070 37 58 W |
| South Hope | Populated Place | 115 | Knox | 44 12 52 N | 069 11 30 W |
| South Hope Community Church | Church | 110 | Knox | 44 12 54 N | 069 11 46 W |
| South Inlet | Stream | | Piscataquis | 45 14 53 N | 069 20 07 W |
| South Inlet | Stream | | Piscataquis | 45 44 13 N | 069 33 02 W |
| South Inlet Brook | Stream | | Piscataquis | 45 33 47 N | 069 07 54 W |
| South Jefferson | Populated Place | 65 | Lincoln | 44 09 50 N | 069 32 49 W |
| South Lagrange | Populated Place | 59 | Penobscot | 45 06 58 N | 068 48 54 W |