Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Wentworth Mountain | Summit | 75 | Knox | 44 02 18 N | 068 38 07 W |
| Wentworth Point | Cape | 59 | Kennebec | 44 27 29 N | 069 31 48 W |
| Wentworth Point | Cape | 0 | Lincoln | 43 56 05 N | 069 34 48 W |
| WERU-FM (Blue Hill) | Tower | 282 | Hancock | 44 26 04 N | 068 35 23 W |
| Wescot Stream | Stream | | Waldo | 44 26 55 N | 069 01 40 W |
| Wescutogo Hill | Summit | 75 | Cumberland | 43 51 04 N | 070 13 59 W |
| Weskeag River | Stream | | Knox | 44 01 46 N | 069 06 31 W |
| Wesley | Populated Place | 147 | Washington | 44 57 08 N | 067 39 39 W |
| Wesley Brook | Stream | | Aroostook | 47 06 22 N | 068 58 54 W |
| Wesley Elementary School | School | 147 | Washington | 44 57 07 N | 067 39 41 W |
| Wesleyan Church | Church | 120 | Aroostook | 46 46 21 N | 067 50 10 W |
| Wesleyan Church | Church | 18 | Washington | 45 10 43 N | 067 17 15 W |
| Wesserunsett and Ice Seaplane Base | Airport | 102 | Somerset | 44 50 32 N | 069 46 08 W |
| Wesserunsett Lake | Reservoir | 102 | Somerset | 44 50 48 N | 069 45 31 W |
| Wesserunsett Stream | Stream | | Somerset | 44 46 08 N | 069 40 35 W |
| West Appleton | Populated Place | 97 | Knox | 44 21 04 N | 069 15 38 W |
| West Arm Clifford Lake | Bay | 68 | Washington | 45 03 47 N | 067 42 11 W |
| West Arm Upper Richardson Lake | Bay | 442 | Oxford | 44 52 58 N | 070 55 09 W |
| West Athens | Populated Place | 149 | Somerset | 44 57 12 N | 069 42 39 W |
| West Auburn | Populated Place | 146 | Androscoggin | 44 09 24 N | 070 16 51 W |
| West Baldwin | Populated Place | 115 | Cumberland | 43 49 59 N | 070 46 40 W |
| West Bangor | Populated Place | 51 | Penobscot | 44 47 42 N | 068 50 00 W |
| West Bar Island | Island | 3 | Washington | 44 33 49 N | 067 31 38 W |
| West Barge | Island | 0 | Hancock | 44 13 57 N | 068 26 58 W |
| West Barrens | Flat | 62 | Washington | 44 43 37 N | 068 00 34 W |
| West Bath Church | Church | 34 | Sagadahoc | 43 51 44 N | 069 50 43 W |
| West Bay | Bay | -2 | Hancock | 44 27 34 N | 068 00 12 W |
| West Bay Pond | Reservoir | 31 | Hancock | 44 30 12 N | 068 03 52 W |
| West Bay Pond Dam | Dam | 31 | Hancock | 44 30 12 N | 068 03 52 W |
| West Belfast Cemetery | Cemetery | 61 | Waldo | 44 23 48 N | 069 02 27 W |
| West Bethel | Populated Place | 207 | Oxford | 44 24 07 N | 070 51 40 W |
| West Bethel Union Church | Church | 209 | Oxford | 44 24 04 N | 070 51 43 W |
| West Black Ledge | Bar | 0 | Knox | 43 51 40 N | 068 52 11 W |
| West Black Rock | Island | 0 | Washington | 44 31 41 N | 067 30 19 W |
| West Boothbay Harbor | Populated Place | 7 | Lincoln | 43 50 56 N | 069 38 36 W |
| West Boothbay Harbor Post Office (historical) | Post Office | 1 | Lincoln | 43 51 45 N | 069 38 42 W |
| West Bowdoin | Populated Place | 61 | Sagadahoc | 44 02 50 N | 070 01 29 W |
| West Bowdoin Baptist Church | Church | 67 | Sagadahoc | 44 02 58 N | 070 01 14 W |
| West Bowdoin School (historical) | School | 58 | Sagadahoc | 44 02 23 N | 070 00 43 W |
| West Branch | Channel | -2 | Sagadahoc | 43 57 46 N | 069 50 05 W |
| West Branch Alder Stream | Stream | | Franklin | 45 13 01 N | 070 39 56 W |
| West Branch Allagash Stream | Stream | | Piscataquis | 46 22 42 N | 069 41 10 W |
| West Branch Amazon Brook | Stream | | Washington | 45 15 44 N | 067 45 12 W |
| West Branch Atkins Brook | Stream | | Piscataquis | 46 25 32 N | 069 01 11 W |
| West Branch Beaver Brook | Stream | | Aroostook | 46 46 59 N | 068 24 43 W |
| West Branch Ben Glazier Brook | Stream | | Aroostook | 46 55 35 N | 069 16 31 W |
| West Branch Big Musquash Stream | Stream | | Washington | 45 14 48 N | 067 43 18 W |
| West Branch Black Stream | Stream | | Somerset | 44 49 03 N | 069 32 56 W |
| West Branch Bog Brook | Stream | | Oxford | 44 08 56 N | 070 23 21 W |
| West Branch Brandy Brook | Stream | | Aroostook | 46 15 00 N | 068 13 23 W |
| West Branch Bridge | Bridge | 161 | Hancock | 44 19 17 N | 068 15 38 W |
| West Branch Carrabassett River | Stream | | Franklin | 44 57 41 N | 070 09 28 W |
| West Branch Carry Brook | Stream | | Penobscot | 46 21 37 N | 068 38 32 W |
| West Branch Chase Brook | Stream | | Aroostook | 47 14 07 N | 069 16 39 W |
| West Branch Clearwater Brook | Stream | | Franklin | 45 20 51 N | 070 39 38 W |
| West Branch Cold Brook | Stream | | Somerset | 44 47 52 N | 069 42 13 W |
| West Branch Davis Stream | Stream | | Lincoln | 44 12 21 N | 069 27 01 W |
| West Branch Dead Stream | Stream | | Penobscot | 45 03 18 N | 068 50 13 W |
| West Branch Denham Stream | Stream | | Sagadahoc | 44 00 35 N | 069 53 24 W |
| West Branch Drake Brook | Stream | | Piscataquis | 46 35 12 N | 069 24 25 W |
| West Branch Eastern River | Stream | | Lincoln | 44 10 37 N | 069 40 10 W |
| West Branch Egypt Stream | Stream | | Hancock | 44 34 58 N | 068 18 49 W |
| West Branch Ellis River | Stream | | Oxford | 44 37 01 N | 070 44 01 W |
| West Branch Enoch Brook | Stream | | Washington | 45 19 47 N | 067 28 51 W |
| West Branch Gulf Stream | Stream | | Franklin | 45 35 43 N | 070 31 46 W |
| West Branch Gulliver Brook | Stream | | Somerset | 45 56 31 N | 069 54 31 W |
| West Branch Hot Brook | Stream | | Washington | 45 34 40 N | 067 56 39 W |
| West Branch Huntley Brook | Stream | | Washington | 45 20 17 N | 067 40 39 W |
| West Branch Little Black River | Stream | | Aroostook | 47 15 54 N | 069 21 00 W |
| West Branch Little Kennebec Bay | Bay | -2 | Washington | 44 39 44 N | 067 26 34 W |
| West Branch Little Magalloway River | Stream | | Oxford | 45 08 00 N | 071 01 47 W |
| West Branch Little Molunkus Stream | Stream | | Aroostook | 45 44 26 N | 068 23 47 W |
| West Branch Machias River | Stream | | Washington | 44 57 28 N | 067 52 21 W |
| West Branch Magalloway River | Stream | | Oxford | 45 15 25 N | 071 01 40 W |
| West Branch Mattagodus Stream | Stream | | Penobscot | 45 30 10 N | 068 08 46 W |
| West Branch Mattawamkeag River | Stream | | Aroostook | 45 50 03 N | 067 59 29 W |
| West Branch Mill Brook | Stream | | Franklin | 45 30 46 N | 070 41 25 W |
| West Branch Millberry Brook | Stream | | Washington | 45 22 22 N | 067 30 05 W |
| West Branch Misery Stream | Stream | | Somerset | 45 32 08 N | 069 56 47 W |
| West Branch Molunkus Stream | Stream | | Aroostook | 45 53 49 N | 068 24 14 W |
| West Branch Moose River | Stream | | Franklin | 45 27 31 N | 070 33 48 W |
| West Branch Mud Brook | Stream | | Penobscot | 45 51 32 N | 068 33 10 W |
| West Branch Narraguagus River | Stream | | Hancock | 44 56 36 N | 068 06 45 W |
| West Branch Narraguagus River | Stream | | Washington | 44 36 27 N | 067 56 52 W |
| West Branch Nash Stream | Stream | | Franklin | 45 04 19 N | 070 28 36 W |
| West Branch New Stream | Stream | | Washington | 44 56 48 N | 067 40 44 W |
| West Branch Nezinscot River | Stream | | Oxford | 44 17 15 N | 070 21 13 W |
| West Branch Nezinscot River Reservoir | Reservoir | 98 | Oxford | 44 15 24 N | 070 15 22 W |
| West Branch Oyster River | Stream | | Knox | 44 07 30 N | 069 11 59 W |
| West Branch Passadumkeag River | Stream | | Penobscot | 45 18 52 N | 068 13 17 W |
| West Branch Penobscot River | Stream | | Penobscot | 45 36 15 N | 068 31 55 W |
| West Branch Penobscot River Reservoir | Reservoir | 78 | Penobscot | 45 36 24 N | 068 32 46 W |
| West Branch Penobscot River Reservoir | Reservoir | 124 | Penobscot | 45 36 24 N | 068 34 34 W |
| West Branch Piscataquis River | Stream | | Piscataquis | 45 16 55 N | 069 35 25 W |
| West Branch Pleasant River | Stream | | Oxford | 44 21 59 N | 070 50 55 W |
| West Branch Pleasant River | Stream | | Piscataquis | 45 21 56 N | 069 03 13 W |
| West Branch Pleasant River | Stream | | Washington | 44 37 01 N | 067 44 42 W |
| West Branch Pleasant River Dam | Dam | 3 | Washington | 44 34 18 N | 067 38 34 W |
| West Branch Pleasant River Reservoir | Reservoir | 3 | Washington | 44 34 18 N | 067 38 34 W |
| West Branch Pocwock Stream | Stream | 293 | Aroostook | 47 08 01 N | 069 26 31 W |
| West Branch Presque Isle Stream | Stream | | Aroostook | 46 30 39 N | 068 05 49 W |
| West Branch Rainey Brook | Stream | | Somerset | 46 06 48 N | 070 04 10 W |
| West Branch Red Brook | Stream | | Piscataquis | 46 01 34 N | 069 16 48 W |
| West Branch Ripogenus Stream | Stream | | Piscataquis | 46 00 05 N | 069 14 43 W |
| West Branch Salmon Brook | Stream | | Aroostook | 46 47 21 N | 068 09 44 W |
| West Branch Sandy Stream | Stream | | Somerset | 45 41 15 N | 070 19 34 W |
| West Branch Sawtelle Brook | Stream | | Penobscot | 46 14 24 N | 068 41 57 W |
| West Branch Seboeis Stream | Stream | | Penobscot | 45 22 33 N | 068 44 15 W |
| West Branch Sheepscot River | Stream | | Lincoln | 44 14 26 N | 069 34 22 W |
| West Branch Souadabscook Stream | Stream | | Penobscot | 44 45 23 N | 068 55 11 W |