Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Wiley | Populated Place | 235 | York | 39 43 20 N | 076 32 36 W |
| Wiley Trail | Trail | 530 | Cameron | 41 31 16 N | 078 11 44 W |
| Wileys Bridge | Bridge | 77 | Berks | 40 26 20 N | 075 55 36 W |
| Wilgus | Populated Place | 494 | Indiana | 40 47 02 N | 078 53 08 W |
| WILK-AM (Wilkes-Barre) | Tower | 161 | Luzerne | 41 13 42 N | 075 56 52 W |
| Wilkes Barre Filtration Plant | Locale | 247 | Luzerne | 41 17 56 N | 075 55 44 W |
| Wilkes Barre Township Elementary School | School | 201 | Luzerne | 41 13 44 N | 075 52 17 W |
| Wilkes-Barre | Populated Place | 163 | Luzerne | 41 14 45 N | 075 52 53 W |
| Wilkes-Barre Day School | School | 170 | Luzerne | 41 17 31 N | 075 52 07 W |
| Wilkes-Barre General Hospital | Hospital | 189 | Luzerne | 41 15 29 N | 075 52 00 W |
| Wilkes-Barre Golf Course | Locale | 556 | Luzerne | 41 10 47 N | 075 44 17 W |
| Wilkes-Barre Mountain | Summit | 432 | Luzerne | 41 11 12 N | 075 55 41 W |
| Wilkes-Barre Wyoming Valley Airport | Airport | 165 | Luzerne | 41 17 45 N | 075 51 14 W |
| Wilkes-Barre/Scranton International Airport | Airport | 283 | Luzerne | 41 20 19 N | 075 43 25 W |
| Wilkins Church | Church | 508 | Crawford | 41 49 42 N | 079 53 11 W |
| Wilkins Middle School | School | 365 | Allegheny | 40 25 50 N | 079 49 39 W |
| Wilkins Township School | School | 389 | Allegheny | 40 26 21 N | 079 51 19 W |
| Wilkinsburg | Populated Place | 287 | Allegheny | 40 26 30 N | 079 52 55 W |
| Wilkinsburg Junior-Senior High School | School | 300 | Allegheny | 40 26 39 N | 079 52 53 W |
| Wilkinson Lake | Reservoir | 344 | Monroe | 41 11 19 N | 075 09 57 W |
| Wilkinson School (historical) | School | 469 | Crawford | 41 44 51 N | 080 00 32 W |
| Wilko Hill | Populated Place | 278 | Westmoreland | 40 11 49 N | 079 51 22 W |
| Will Johns Gap | Gap | 395 | Mifflin | 40 44 51 N | 077 34 40 W |
| Will O Wood | Populated Place | 10 | Bucks | 40 09 34 N | 074 49 48 W |
| Willard Orphanage Country Home | Building | 403 | Indiana | 40 36 40 N | 079 10 18 W |
| Willard School | School | 9 | Philadelphia | 39 59 30 N | 075 07 01 W |
| Willard School | School | 301 | Westmoreland | 40 29 26 N | 079 27 41 W |
| Willet | Populated Place | 326 | Indiana | 40 43 45 N | 079 12 30 W |
| Willett Park | Park | 85 | Montgomery | 40 08 59 N | 075 08 34 W |
| Willey School (historical) | School | 491 | Crawford | 41 51 39 N | 079 54 38 W |
| Willholm Run | Stream | | Clearfield | 41 03 40 N | 078 11 48 W |
| William Allen Senior High School | School | 111 | Lehigh | 40 36 01 N | 075 30 11 W |
| William Brinton House | Building | 131 | Delaware | 39 53 28 N | 075 33 34 W |
| William D Boyce Regional Park | Park | 375 | Allegheny | 40 28 00 N | 079 45 10 W |
| William Kennedy Athletic Complex | Park | 110 | Lehigh | 40 38 19 N | 075 27 20 W |
| William Penn Camp (historical) | Locale | 583 | Clinton | 41 12 15 N | 077 47 53 W |
| William Penn Cemetery | Cemetery | 67 | Philadelphia | 40 07 31 N | 075 00 40 W |
| William Penn Dam | Dam | 329 | Pike | 41 09 00 N | 075 08 59 W |
| William Penn Elementary School | School | 370 | Allegheny | 40 13 33 N | 079 53 58 W |
| William Penn Gardens of Remembrance | Cemetery | 366 | Allegheny | 40 26 11 N | 079 50 55 W |
| William Penn High School | School | 24 | Bucks | 40 10 36 N | 074 50 35 W |
| William Penn High School | School | 105 | Dauphin | 40 17 33 N | 076 53 54 W |
| William Penn Manor | Populated Place | 115 | Northampton | 40 39 39 N | 075 20 05 W |
| William Penn Post Office (historical) | Post Office | 25 | Montgomery | 40 04 33 N | 075 16 41 W |
| William Penn School | School | 22 | Delaware | 39 50 22 N | 075 24 06 W |
| William Penn School | School | 135 | York | 39 57 04 N | 076 45 26 W |
| William Penn Senior High School | School | 124 | York | 39 57 28 N | 076 43 42 W |
| William Penns Landing Site | Airport | 3 | Delaware | 39 50 39 N | 075 21 38 W |
| Williams | Populated Place | 511 | Forest | 41 27 15 N | 079 10 24 W |
| Williams | Populated Place | 72 | Montgomery | 40 06 36 N | 075 14 40 W |
| Williams | Populated Place | 378 | Somerset | 39 49 50 N | 078 46 14 W |
| Williams Bridge Dam | Dam | 422 | Lackawanna | 41 22 54 N | 075 37 29 W |
| Williams Bridge Reservoir | Reservoir | 422 | Lackawanna | 41 22 54 N | 075 37 29 W |
| Williams Brook | Stream | | Warren | 41 58 19 N | 078 55 39 W |
| Williams Cemetery | Cemetery | 405 | Blair | 40 33 34 N | 078 13 24 W |
| Williams Cemetery | Cemetery | 295 | Centre | 40 50 36 N | 077 59 38 W |
| Williams Cemetery | Cemetery | 498 | Clearfield | 40 54 23 N | 078 32 47 W |
| Williams Cemetery | Cemetery | 170 | York | 39 52 24 N | 076 39 32 W |
| Williams Corner | Populated Place | 39 | Chester | 40 06 30 N | 075 30 43 W |
| Williams Corner | Populated Place | 432 | Susquehanna | 41 51 32 N | 075 49 53 W |
| Williams Creek | Stream | | Bradford | 41 51 59 N | 076 08 17 W |
| Williams Dale School (historical) | School | 420 | Clearfield | 41 04 09 N | 078 23 38 W |
| Williams Dam | Dam | 137 | York | 39 53 24 N | 076 43 47 W |
| Williams Grove | Populated Place | 128 | Cumberland | 40 09 06 N | 077 02 05 W |
| Williams Grove Heliport | Airport | 128 | Cumberland | 40 09 00 N | 077 01 59 W |
| Williams Grove Park | Park | 136 | Cumberland | 40 09 20 N | 077 02 01 W |
| Williams Hill | Summit | 306 | Berks | 40 12 06 N | 075 48 44 W |
| Williams Hollow | Valley | | Bradford | 41 38 47 N | 076 48 08 W |
| Williams Hollow | Valley | | Cameron | 41 35 13 N | 078 10 36 W |
| Williams Hollow | Valley | | Centre | 40 49 37 N | 078 01 21 W |
| Williams Hollow | Valley | | Potter | 41 34 26 N | 077 40 10 W |
| Williams Lake | Lake | 529 | Sullivan | 41 34 24 N | 076 38 39 W |
| Williams Mill (historical) | Locale | 133 | Cumberland | 40 09 09 N | 077 01 50 W |
| Williams Pond | Reservoir | 427 | Susquehanna | 41 51 38 N | 075 49 58 W |
| Williams Pond | Reservoir | 386 | Wayne | 41 34 30 N | 075 08 58 W |
| Williams Pond Cemetery | Cemetery | 493 | Susquehanna | 41 51 35 N | 075 49 07 W |
| Williams Pond Dam | Dam | 441 | Susquehanna | 41 51 36 N | 075 50 05 W |
| Williams Pond Dam | Dam | 384 | Wayne | 41 34 30 N | 075 08 59 W |
| Williams Quarry | Mine | 60 | Northampton | 40 42 48 N | 075 11 48 W |
| Williams Run | Stream | | Cambria | 40 28 53 N | 078 46 15 W |
| Williams Run | Stream | | Crawford | 41 32 33 N | 080 10 56 W |
| Williams Run | Stream | | Jefferson | 41 19 07 N | 078 53 59 W |
| Williams Run | Stream | | Lancaster | 39 57 11 N | 076 00 03 W |
| Williams Run | Stream | | Potter | 41 33 46 N | 077 56 14 W |
| Williams Run | Stream | | Venango | 41 17 45 N | 079 57 02 W |
| Williams Run Dam | Dam | 615 | Cambria | 40 30 06 N | 078 46 17 W |
| Williams Run Reservoir | Reservoir | 615 | Cambria | 40 30 04 N | 078 46 20 W |
| Williams School | School | 88 | Montgomery | 40 05 34 N | 075 08 35 W |
| Williams School | School | 254 | Washington | 40 11 40 N | 079 54 52 W |
| Williams School (historical) | School | 516 | Cambria | 40 42 29 N | 078 29 23 W |
| Williams School (historical) | School | 388 | Mercer | 41 28 29 N | 080 11 18 W |
| Williams Township Elementary School | School | 215 | Northampton | 40 38 21 N | 075 14 15 W |
| Williams Trail | Trail | 473 | Tioga | 41 36 34 N | 077 15 31 W |
| Williams Valley High School | School | 250 | Schuylkill | 40 35 32 N | 076 31 48 W |
| Williams Valley Junction | Populated Place | 412 | Schuylkill | 40 35 49 N | 076 33 46 W |
| Williams Valley School | School | 227 | Dauphin | 40 34 48 N | 076 37 51 W |
| Williamsburg | Populated Place | 242 | Armstrong | 40 48 36 N | 079 31 23 W |
| Williamsburg | Populated Place | 257 | Blair | 40 27 43 N | 078 11 59 W |
| Williamsburg | Populated Place | 424 | Clarion | 41 10 46 N | 079 23 43 W |
| Williamsburg Reservoir | Reservoir | 361 | Blair | 40 28 20 N | 078 09 33 W |
| Williamsburg Reservoir | Reservoir | 396 | Blair | 40 28 44 N | 078 09 23 W |
| Williamsburg Sportsmens Park | Park | 279 | Blair | 40 27 30 N | 078 10 23 W |
| Williamsburg Station Dam | Dam | 256 | Blair | 40 28 18 N | 078 12 29 W |
| Williamsburg Station Lake | Reservoir | 256 | Blair | 40 28 18 N | 078 12 29 W |
| Williamson | Populated Place | 148 | Franklin | 39 51 11 N | 077 47 51 W |
| Williamson Cemetery | Cemetery | 353 | Greene | 39 46 52 N | 079 58 30 W |
| Williamson Park | Park | 92 | Lancaster | 40 01 16 N | 076 16 59 W |
| Williamson School | School | 311 | Tioga | 41 57 24 N | 077 06 28 W |
| Williamson Trade School | School | 93 | Delaware | 39 54 23 N | 075 25 25 W |
| Williamson-Johnson Cemetery | Cemetery | 18 | Bucks | 40 06 17 N | 074 54 30 W |