Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Welland | Populated Place | 287 | Walla Walla | 46 13 39 N | 118 44 48 W |
| Wellenbrock Spring | Spring | 725 | Klickitat | 45 59 23 N | 121 13 21 W |
| Weller Butte | Summit | 1662 | Columbia | 46 02 07 N | 117 40 22 W |
| Weller Canyon | Valley | | Columbia | 46 18 36 N | 118 10 58 W |
| Weller Canyon Airport | Airport | 403 | Columbia | 46 18 54 N | 118 10 42 W |
| Wellesley Peak | Summit | 2018 | Jefferson | 47 47 28 N | 123 17 29 W |
| Wellie Peak | Summit | 1993 | Okanogan | 48 48 55 N | 120 07 14 W |
| Wellin Lake | Lake | 37 | Snohomish | 47 50 29 N | 121 56 58 W |
| Wellington Elementary School | School | 110 | King | 47 46 05 N | 122 07 12 W |
| Wellington Hills Golf Course | Locale | 139 | Snohomish | 47 46 43 N | 122 08 04 W |
| Wellington Peak | Summit | 1359 | Stevens | 48 15 30 N | 118 04 38 W |
| Wellman Basin | Basin | 304 | Snohomish | 48 13 59 N | 121 39 50 W |
| Wellpinit | Populated Place | 732 | Stevens | 47 53 17 N | 117 59 17 W |
| Wellpinit Creek | Stream | | Stevens | 47 54 15 N | 117 56 18 W |
| Wellpinit High /Elementary School | School | 697 | Stevens | 47 53 22 N | 117 58 10 W |
| Wellpinit Mountain | Summit | 1016 | Stevens | 47 53 11 N | 118 01 16 W |
| Wells Creek | Stream | | Ferry | 48 11 06 N | 118 31 34 W |
| Wells Creek | Stream | | Whatcom | 48 54 18 N | 121 48 32 W |
| Wells Dam | Dam | 239 | Douglas | 47 56 51 N | 119 51 56 W |
| Wells Fargo Mine | Mine | 1195 | Stevens | 48 08 55 N | 117 58 07 W |
| Welsh Cemetery | Cemetery | 617 | Grant | 47 42 50 N | 119 02 45 W |
| Welsh Creek | Stream | | Lincoln | 47 49 49 N | 118 25 43 W |
| Welsh Creek Cove | Bay | 394 | Lincoln | 47 49 60 N | 118 25 29 W |
| Welsh Ranch | Locale | 6 | Pacific | 46 41 04 N | 123 49 49 W |
| Wenas | Populated Place | 701 | Yakima | 46 52 21 N | 120 46 26 W |
| Wenas Camp | Locale | 794 | Yakima | 46 54 25 N | 120 48 23 W |
| Wenas Cemetery | Cemetery | 501 | Yakima | 46 46 27 N | 120 37 32 W |
| Wenas Creek | Stream | | Yakima | 46 41 41 N | 120 29 31 W |
| Wenas Dam | Dam | 593 | Yakima | 46 48 52 N | 120 40 21 W |
| Wenas Dam | Dam | 585 | Yakima | 46 48 51 N | 120 40 24 W |
| Wenas Lake | Reservoir | 585 | Yakima | 46 48 51 N | 120 40 24 W |
| Wenas Valley | Valley | | Yakima | 46 42 38 N | 120 31 41 W |
| Wenas Valley Grange | Locale | 454 | Yakima | 46 44 43 N | 120 36 02 W |
| Wenatchee | Populated Place | 200 | Chelan | 47 25 24 N | 120 18 37 W |
| Wenatchee Boat Club | Locale | 217 | Chelan | 47 33 03 N | 120 16 56 W |
| Wenatchee Cemetery | Cemetery | 248 | Chelan | 47 27 03 N | 120 20 51 W |
| Wenatchee Christian Academy | School | 232 | Chelan | 47 25 04 N | 120 18 52 W |
| Wenatchee Creek Trail | Trail | 789 | Asotin | 46 05 01 N | 117 23 10 W |
| Wenatchee Golf and Country Club | Locale | 269 | Douglas | 47 25 53 N | 120 17 14 W |
| Wenatchee Guard Station | Locale | 1667 | Asotin | 46 07 19 N | 117 22 48 W |
| Wenatchee Heights | Populated Place | 665 | Chelan | 47 21 35 N | 120 17 14 W |
| Wenatchee Heights Reservoir Number One | Reservoir | 1208 | Chelan | 47 17 23 N | 120 20 52 W |
| Wenatchee Heights Reservoir Number One Dam | Dam | 1208 | Chelan | 47 17 23 N | 120 20 52 W |
| Wenatchee Heights Reservoir Number Two | Reservoir | 1196 | Chelan | 47 17 41 N | 120 21 04 W |
| Wenatchee Heights Reservoir Number Two Dam | Dam | 1195 | Chelan | 47 17 41 N | 120 21 04 W |
| Wenatchee High School | School | 240 | Chelan | 47 25 09 N | 120 19 15 W |
| Wenatchee Junior Academy (historical) | School | 257 | Chelan | 47 25 51 N | 120 20 47 W |
| Wenatchee Mountain | Summit | 2041 | Chelan | 47 16 26 N | 120 24 21 W |
| Wenatchee Mountains | Range | 1836 | Chelan | 47 25 30 N | 120 49 58 W |
| Wenatchee National Forest | Forest | 1124 | Chelan | 48 22 59 N | 121 01 04 W |
| Wenatchee National Forest Supervisors Office | Building | 215 | Chelan | 47 25 14 N | 120 18 43 W |
| Wenatchee Pass | Gap | 1289 | Chelan | 47 52 23 N | 121 09 20 W |
| Wenatchee Reclamation Ditch | Canal | 262 | Douglas | 47 24 12 N | 120 16 38 W |
| Wenatchee Ridge | Ridge | 1722 | Chelan | 47 53 25 N | 120 59 47 W |
| Wenatchee Ridge Viewpoint | Locale | 901 | Chelan | 47 51 16 N | 120 52 19 W |
| Wenatchee River | Stream | | Chelan | 47 27 19 N | 120 19 28 W |
| Wenatchee River County Park | Park | 209 | Chelan | 47 28 54 N | 120 24 27 W |
| Wenatchee Speedway | Locale | 429 | Douglas | 47 27 11 N | 120 16 37 W |
| Wenatchee Spring | Spring | 1618 | Asotin | 46 07 35 N | 117 23 06 W |
| Wenatchee Valley Alternative High School | School | 234 | Chelan | 47 25 56 N | 120 20 14 W |
| Wenatchee Valley College | School | 260 | Okanogan | 48 24 46 N | 119 31 51 W |
| Wenatchee Valley Junior College | School | 233 | Chelan | 47 25 50 N | 120 20 04 W |
| Wenberg State Park | Park | 134 | Snohomish | 48 08 12 N | 122 17 09 W |
| Wendell Phillips School | School | 214 | Yakima | 46 17 01 N | 120 03 41 W |
| Wenner Lake Number Five | Reservoir | 764 | Okanogan | 48 19 48 N | 119 59 52 W |
| Wenner Lake Number Five Dam | Dam | 764 | Okanogan | 48 19 48 N | 119 59 52 W |
| Wenner Lake Number Four Dam | Dam | 737 | Okanogan | 48 19 42 N | 119 59 52 W |
| Wenner Lake Number One Dam | Dam | 659 | Okanogan | 48 18 48 N | 120 00 10 W |
| Wenner Lake Number Three Dam | Dam | 775 | Okanogan | 48 19 54 N | 119 59 52 W |
| Wenner Lake Number Two Dam | Dam | 722 | Okanogan | 48 19 18 N | 119 59 52 W |
| Wenner Lakes | Reservoir | 783 | Okanogan | 48 19 45 N | 119 59 49 W |
| Wenner Lakes Number One | Reservoir | 659 | Okanogan | 48 18 48 N | 120 00 10 W |
| Wenner Lakes Number Three | Reservoir | 775 | Okanogan | 48 19 54 N | 119 59 52 W |
| Wenner Lakes Number Two | Reservoir | 722 | Okanogan | 48 19 18 N | 119 59 52 W |
| Wentworth Lake | Lake | 47 | Clallam | 48 00 36 N | 124 31 48 W |
| Wenzel Slough | Stream | | Grays Harbor | 46 58 57 N | 123 28 20 W |
| Wenzel Springs Pumping Station | Locale | 7 | Grays Harbor | 46 59 37 N | 123 26 40 W |
| Weowna Beach Park | Park | 61 | King | 47 35 45 N | 122 06 49 W |
| Werner Road Interchange | Crossing | 48 | Kitsap | 47 33 28 N | 122 40 20 W |
| Wesel Creek | Stream | | Lewis | 46 34 04 N | 121 43 38 W |
| Wesley Creek | Stream | | Yakima | 46 22 43 N | 121 32 59 W |
| Wesley Junction | Populated Place | 239 | Yakima | 46 24 12 N | 120 20 19 W |
| Wesseler Ranch | Locale | 21 | Clallam | 48 09 05 N | 124 35 04 W |
| Wessendorf Canyon | Valley | | Stevens | 48 12 22 N | 117 38 29 W |
| West Auburn Interchange | Crossing | 22 | King | 47 18 12 N | 122 15 10 W |
| West Badger Lateral | Canal | 209 | Benton | 46 13 21 N | 119 22 15 W |
| West Bank | Bar | 0 | San Juan | 48 45 10 N | 122 56 45 W |
| West Bar | Bar | 208 | Kittitas | 47 12 22 N | 120 01 24 W |
| West Basin | Basin | 926 | Okanogan | 48 19 17 N | 119 22 44 W |
| West Bay | Bay | 2 | Thurston | 47 03 09 N | 122 54 35 W |
| West Beach | Beach | 9 | Island | 48 13 52 N | 122 46 04 W |
| West Beach | Beach | 20 | Whatcom | 48 44 26 N | 122 40 16 W |
| West Beach | Populated Place | 11 | San Juan | 48 41 14 N | 122 57 28 W |
| West Bear Creek | Stream | | Asotin | 46 00 20 N | 117 19 05 W |
| West Blackhorse Lake | Lake | 693 | Spokane | 47 25 13 N | 117 32 49 W |
| West Blakely | Populated Place | 22 | Kitsap | 47 35 53 N | 122 32 22 W |
| West Branch Dragoon Creek | Stream | | Spokane | 47 54 57 N | 117 29 57 W |
| West Branch Elk River | Stream | | Grays Harbor | 46 50 02 N | 123 58 57 W |
| West Branch Gypsy Creek | Stream | | Pend Oreille | 48 53 14 N | 117 08 42 W |
| West Branch Home Creek | Stream | | Jefferson | 47 47 19 N | 123 09 20 W |
| West Branch LeClerc Creek | Stream | | Pend Oreille | 48 32 02 N | 117 16 56 W |
| West Branch Little Spokane River | Stream | | Spokane | 47 58 57 N | 117 19 43 W |
| West Branch Newman Creek | Stream | | Grays Harbor | 47 02 15 N | 123 26 56 W |
| West Branch Rattlesnake Creek | Stream | | Asotin | 46 03 39 N | 117 14 14 W |
| West Branch Wynoochee River | Stream | | Grays Harbor | 47 26 49 N | 123 33 03 W |
| West Butte | Summit | 1896 | Columbia | 46 06 50 N | 117 41 35 W |
| West Butte Creek Trail | Trail | 1090 | Columbia | 46 04 23 N | 117 45 50 W |
| West Butte Ridge | Ridge | 1686 | Columbia | 46 08 09 N | 117 42 25 W |
| West Cady Creek | Stream | | Snohomish | 47 53 57 N | 121 19 08 W |
| West Cady Ridge | Ridge | 1403 | Snohomish | 47 54 33 N | 121 14 05 W |