Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Wentworth Island | Island | 355 | Coos | 44 39 47 N | 071 12 49 W |
| Wentworth Location | Civil | 444 | Coos | 44 50 23 N | 071 08 04 W |
| Wentworth Location | Populated Place | 392 | Coos | 44 51 29 N | 071 03 19 W |
| West Branch Abbott Brook | Stream | | Coos | 44 59 22 N | 071 03 40 W |
| West Branch Cedar Stream | Stream | | Coos | 45 01 34 N | 071 16 35 W |
| West Branch Clear Stream | Stream | | Coos | 44 49 12 N | 071 14 53 W |
| West Branch Dead Diamond | Stream | | Coos | 45 00 17 N | 071 09 05 W |
| West Branch Indian Stream | Stream | | Coos | 45 12 10 N | 071 20 22 W |
| West Branch Little Dead Diamond River | Stream | | Coos | 44 58 50 N | 071 10 46 W |
| West Branch Little Magalloway River | Stream | | Coos | 45 08 02 N | 071 01 47 W |
| West Branch Magalloway River | Stream | | Coos | 45 15 00 N | 071 00 30 W |
| West Branch Mill Brook | Stream | | Coos | 44 33 14 N | 071 24 39 W |
| West Branch Mohawk River | Stream | | Coos | 44 52 34 N | 071 22 16 W |
| West Branch of Indian Stream Reservoir | Reservoir | 475 | Coos | 45 12 54 N | 071 20 34 W |
| West Branch Peabody River | Stream | | Coos | 44 18 40 N | 071 13 14 W |
| West Branch Phillips Brook | Stream | | Coos | 44 44 25 N | 071 18 56 W |
| West Branch Simms Stream | Stream | | Coos | 44 49 58 N | 071 27 15 W |
| West Branch Upper Ammonoosuc River | Stream | | Coos | 44 29 50 N | 071 18 24 W |
| West Inlet | Stream | | Coos | 44 46 13 N | 071 16 05 W |
| West Inlet | Stream | | Coos | 45 10 15 N | 071 11 08 W |
| West Milan | Populated Place | 302 | Coos | 44 35 55 N | 071 18 15 W |
| West Peak | Summit | 1069 | Coos | 44 45 18 N | 071 29 48 W |
| West Royce Mountain | Summit | 964 | Coos | 44 18 07 N | 071 01 05 W |
| West Stewartstown | Populated Place | 311 | Coos | 44 59 43 N | 071 31 52 W |
| Westside Trail | Trail | 1647 | Coos | 44 16 15 N | 071 18 43 W |
| Whaleback Pond | Lake | 381 | Coos | 44 49 26 N | 071 03 17 W |
| Wheeler Pond | Lake | 212 | Coos | 44 24 02 N | 071 01 54 W |
| Wheeler School (historical) | School | 340 | Coos | 45 03 48 N | 071 29 24 W |
| Whipple Brook | Stream | | Coos | 44 30 10 N | 071 31 06 W |
| Whipple Ridge | Ridge | 702 | Coos | 44 59 11 N | 071 18 24 W |
| Whitcomb Mountain | Ridge | 1014 | Coos | 44 43 49 N | 071 22 14 W |
| Whitcomb Pond | Lake | 693 | Coos | 44 42 27 N | 071 23 44 W |
| White Mountains | Range | 1900 | Coos | 44 16 14 N | 071 18 15 W |
| Whitefield | Populated Place | 289 | Coos | 44 22 23 N | 071 36 36 W |
| Whitefield Cemetery | Cemetery | 289 | Coos | 44 22 45 N | 071 37 04 W |
| Whitefield Family Health Clinic | Hospital | 289 | Coos | 44 22 23 N | 071 36 44 W |
| Whitefield Regional Airport | Airport | 319 | Coos | 44 22 00 N | 071 33 03 W |
| Whittemore School (historical) | School | 465 | Coos | 44 53 27 N | 071 24 03 W |
| WHOM-FM (Mount Washington) | Tower | 1915 | Coos | 44 16 13 N | 071 18 11 W |
| Wild River | Stream | | Coos | 44 23 44 N | 070 58 46 W |
| Wild River Campground | Locale | 351 | Coos | 44 18 20 N | 071 03 48 W |
| Wild River Climatic Station | Locale | 372 | Coos | 44 17 59 N | 071 04 30 W |
| Wild River Trail | Trail | 469 | Coos | 44 16 23 N | 071 05 52 W |
| Wildcat Mountain | Summit | 1345 | Coos | 44 15 32 N | 071 12 05 W |
| Wildcat Mountain Ski Area | Locale | 708 | Coos | 44 15 36 N | 071 14 05 W |
| Wildcat Ridge | Ridge | 1316 | Coos | 44 15 18 N | 071 12 06 W |
| Wildcat Ridge Trail | Trail | 1296 | Coos | 44 15 03 N | 071 12 28 W |
| Wildcat River Trail | Trail | 851 | Coos | 44 15 11 N | 071 11 29 W |
| Willard Notch | Gap | 829 | Coos | 44 28 24 N | 071 23 02 W |
| Willey House Camps | Locale | 410 | Coos | 44 10 55 N | 071 23 58 W |
| William D Weeks Memorial Library | Building | 263 | Coos | 44 29 28 N | 071 34 13 W |
| Willis School | School | 354 | Coos | 44 36 36 N | 071 12 03 W |
| Windey Ridge | Ridge | 551 | Coos | 44 53 46 N | 071 05 38 W |
| WKCB Radio Tower (Biloxi) | Tower | 458 | Coos | 44 27 26 N | 071 10 22 W |
| WLED-TV (Littleton) | Tower | 627 | Coos | 44 21 14 N | 071 44 21 W |
| WLGW-AM (Lancaster) | Tower | 283 | Coos | 44 29 42 N | 071 33 08 W |
| WMNF Shelter | Locale | 783 | Coos | 44 14 33 N | 071 08 44 W |
| WMOU-AM (Berlin) | Tower | 450 | Coos | 44 27 32 N | 071 10 14 W |
| WMTK-FM (Littleton) | Tower | 627 | Coos | 44 21 14 N | 071 44 21 W |
| Wocket Ledge | Summit | 851 | Coos | 44 26 35 N | 071 06 33 W |
| Woods Brook | Stream | | Coos | 45 13 12 N | 071 18 07 W |
| Wright Pond | Lake | 790 | Coos | 45 13 16 N | 071 13 53 W |
| WZPK-FM (Berlin) | Tower | 1909 | Coos | 44 16 14 N | 071 18 13 W |
| York Pond | Reservoir | 456 | Coos | 44 30 18 N | 071 20 19 W |
| York Pond Dam | Dam | 464 | Coos | 44 30 18 N | 071 19 58 W |
| York Pond Trail | Trail | 735 | Coos | 44 28 07 N | 071 23 46 W |
| Young School (historical) | School | 553 | Coos | 45 00 23 N | 071 24 58 W |
| Zealand Forest Camp | Locale | 442 | Coos | 44 15 52 N | 071 29 42 W |
| Zealand River | Stream | | Coos | 44 16 08 N | 071 30 41 W |
| Zeta Pass | Gap | 1188 | Coos | 44 16 52 N | 071 10 23 W |
| A-Z Trail | Trail | 920 | Grafton | 44 11 58 N | 071 27 34 W |
| Abbie Greenleaf Memorial Library | Building | 287 | Grafton | 44 13 35 N | 071 44 38 W |
| Abbot Cemetery | Cemetery | 150 | Grafton | 44 04 55 N | 072 01 04 W |
| Abbot Hill | Summit | 528 | Grafton | 44 14 26 N | 071 38 59 W |
| Abel Brook | Stream | | Grafton | 43 37 40 N | 071 39 24 W |
| Acorn Hill | Summit | 397 | Grafton | 43 49 13 N | 072 07 53 W |
| Acteon Ridge | Ridge | 790 | Grafton | 43 54 18 N | 071 31 38 W |
| Advent Christian Church | Church | 245 | Grafton | 44 18 21 N | 071 45 58 W |
| Albee Hill | Summit | 390 | Grafton | 44 19 38 N | 071 56 38 W |
| Alderbrook | Populated Place | 296 | Grafton | 44 19 36 N | 071 41 47 W |
| Alexander Hill | Summit | 393 | Grafton | 43 37 12 N | 071 49 00 W |
| Alexandria | Populated Place | 190 | Grafton | 43 36 41 N | 071 47 34 W |
| Alexandria Mica Mine | Mine | 363 | Grafton | 43 36 26 N | 071 50 08 W |
| Alexandria Village School | School | 208 | Grafton | 43 36 53 N | 071 47 48 W |
| Algonquin Point | Cape | 177 | Grafton | 43 46 05 N | 071 32 54 W |
| Alice Peck Day Memorial Hospital | Hospital | 173 | Grafton | 43 38 27 N | 072 15 51 W |
| All Saints Episcopal Church | Church | 276 | Grafton | 44 18 33 N | 071 46 12 W |
| AMC Kingsman Pond Shelter | Locale | 1143 | Grafton | 44 08 15 N | 071 43 57 W |
| Ames Brook | Stream | | Grafton | 43 41 35 N | 071 37 58 W |
| Ames Brook Campground | Locale | 143 | Grafton | 43 41 28 N | 071 38 18 W |
| Ames Mountain | Summit | 625 | Grafton | 43 52 09 N | 071 52 45 W |
| Ames Plaza Shopping Center | Locale | 150 | Grafton | 44 05 48 N | 072 01 25 W |
| Ammonoosuc Country Club | Locale | 189 | Grafton | 44 13 55 N | 071 53 38 W |
| Ammonoosuc Fish and Game Club | Locale | 265 | Grafton | 44 07 00 N | 071 54 45 W |
| Ammonoosuc River | Stream | | Grafton | 44 09 19 N | 072 02 16 W |
| Ammonoosuc River Dam | Dam | 219 | Grafton | 44 10 00 N | 071 58 34 W |
| Ammonoosuc River Reservoir | Reservoir | 219 | Grafton | 44 10 00 N | 071 58 34 W |
| Ammonoosuc River Reservoir | Reservoir | 139 | Grafton | 44 09 00 N | 072 01 58 W |
| Ammonoosuc River Reservoir | Reservoir | 179 | Grafton | 44 12 54 N | 071 54 46 W |
| Ammonoosuc River Reservoir | Reservoir | 346 | Grafton | 44 17 24 N | 071 38 58 W |
| Ammonoosucuc River Reservoir | Reservoir | 268 | Grafton | 44 18 30 N | 071 44 46 W |
| Amos Tuck School of Administration and Finance | Building | 153 | Grafton | 43 42 19 N | 072 17 40 W |
| Anderson Brook | Stream | | Grafton | 44 07 21 N | 071 26 41 W |
| Appalachian National Scenic Trail | Trail | 248 | Grafton | 43 42 34 N | 072 15 36 W |
| Apple Hill Campground | Locale | 396 | Grafton | 44 17 29 N | 071 40 21 W |
| Apthorp | Populated Place | 271 | Grafton | 44 18 28 N | 071 44 32 W |
| Apthorp Common | Park | 259 | Grafton | 44 18 20 N | 071 44 59 W |
| Apthorp Dam | Dam | 268 | Grafton | 44 18 30 N | 071 44 46 W |
| Aquinas House | Building | 153 | Grafton | 43 42 26 N | 072 17 40 W |
| Archertown Brook | Stream | | Grafton | 43 53 42 N | 072 06 59 W |