Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Williams Lake Dam | Dam | 133 | Van Zandt | 32 27 01 N | 095 37 37 W |
| Williams Lake Number 1 | Reservoir | 12 | Brazoria | 29 11 37 N | 095 42 07 W |
| Williams Lake Number 1 | Reservoir | 432 | Uvalde | 29 34 31 N | 099 56 49 W |
| Williams Lake Number 1 Dam | Dam | 432 | Uvalde | 29 34 31 N | 099 56 49 W |
| Williams Lake Number 1 Levee | Dam | 12 | Brazoria | 29 11 37 N | 095 42 07 W |
| Williams Lake Number 2 | Reservoir | 12 | Brazoria | 29 11 37 N | 095 42 25 W |
| Williams Lake Number 2 | Reservoir | 433 | Uvalde | 29 34 25 N | 099 56 13 W |
| Williams Lake Number 2 Dam | Dam | 433 | Uvalde | 29 34 25 N | 099 56 13 W |
| Williams Lake Number 2 Levee | Dam | 12 | Brazoria | 29 11 37 N | 095 42 25 W |
| Williams Lake Number 3 | Reservoir | 446 | Uvalde | 29 34 31 N | 099 55 43 W |
| Williams Lake Number 3 Dam | Dam | 446 | Uvalde | 29 34 31 N | 099 55 43 W |
| Williams Lakes | Reservoir | 117 | Gregg | 32 32 30 N | 094 43 11 W |
| Williams Memorial Church of God in Christ | Church | 7 | Jefferson | 30 06 20 N | 094 06 15 W |
| Williams Memorial Temple Church of God in Christ | Church | 13 | Harris | 29 44 12 N | 095 21 30 W |
| Williams Oil Field | Oilfield | 604 | Coleman | 31 59 10 N | 099 38 16 W |
| Williams Park | Park | 165 | Dallas | 32 50 40 N | 096 47 48 W |
| Williams Park | Park | 285 | Wichita | 33 55 16 N | 098 28 09 W |
| Williams Point | Cape | 81 | Panola | 32 01 41 N | 094 26 14 W |
| Williams Ranch | Locale | 1076 | Carson | 35 25 11 N | 101 37 21 W |
| Williams Ranch | Locale | 847 | Crane | 31 38 49 N | 102 45 40 W |
| Williams Ranch | Locale | 1526 | Culberson | 31 52 59 N | 104 53 06 W |
| Williams Ranch | Locale | 319 | Hays | 29 55 47 N | 098 05 23 W |
| Williams Ranch | Locale | 1323 | Hudspeth | 31 41 36 N | 105 30 16 W |
| Williams Ranch | Locale | 723 | Kent | 32 59 47 N | 101 00 49 W |
| Williams Ranch | Locale | 501 | Knox | 33 34 55 N | 099 58 58 W |
| Williams Ranch | Locale | 1113 | Yoakum | 33 20 00 N | 102 42 23 W |
| Williams Ranch Cemetery | Cemetery | 412 | Mills | 31 30 38 N | 098 39 16 W |
| Williams Reservoir | Reservoir | 571 | Childress | 34 26 48 N | 100 19 43 W |
| Williams Road Baptist Church | Church | 210 | Tarrant | 32 42 26 N | 097 27 09 W |
| Williams School | School | 40 | Austin | 29 38 14 N | 096 03 37 W |
| Williams School | School | 217 | Bexar | 29 26 32 N | 098 33 23 W |
| Williams School | School | 161 | Dallas | 32 51 18 N | 096 49 50 W |
| Williams School | School | 179 | Dallas | 32 53 49 N | 096 39 22 W |
| Williams School | School | 95 | Gregg | 32 23 32 N | 094 41 47 W |
| Williams School | School | 9 | Harris | 29 41 16 N | 095 13 44 W |
| Williams Spring | Spring | 315 | Burnet | 30 41 20 N | 098 22 43 W |
| Williams Spring | Spring | 23 | Liberty | 30 29 26 N | 094 49 51 W |
| Williams Stadium | Park | 174 | Dallas | 32 55 32 N | 096 38 09 W |
| Williams Street Church of Christ | Church | 152 | Henderson | 32 12 45 N | 095 51 42 W |
| Williams Tank | Reservoir | 1402 | Hudspeth | 31 00 32 N | 105 05 54 W |
| Williams Tank | Reservoir | 1330 | Hudspeth | 31 08 22 N | 105 13 53 W |
| Williams Tank | Reservoir | 1465 | Hudspeth | 31 10 48 N | 105 10 47 W |
| Williams Trace Baptist Church | Church | 23 | Fort Bend | 29 34 60 N | 095 38 39 W |
| Williams Trace Shopping Center | Locale | 22 | Fort Bend | 29 35 31 N | 095 36 01 W |
| Williams Well | Well | 750 | Crane | 31 22 50 N | 102 45 51 W |
| Williams Well | Well | 1318 | Culberson | 30 47 26 N | 104 30 28 W |
| Williams Windmill | Locale | 712 | Coke | 31 46 19 N | 100 32 44 W |
| Williams Windmill | Locale | 813 | Crockett | 31 01 32 N | 101 16 54 W |
| Williams Windmill | Locale | 72 | Jim Wells | 28 03 25 N | 098 06 57 W |
| Williams Windmill | Locale | 845 | Martin | 32 11 28 N | 101 58 05 W |
| Williams-Brueder House | Building | 19 | Harris | 29 48 08 N | 095 24 02 W |
| Williams-Erwin House | Building | 182 | Ellis | 32 23 41 N | 096 50 53 W |
| Williams-Tarbutton House | Building | 204 | Hays | 29 52 58 N | 097 57 03 W |
| Williamsburg | Populated Place | 81 | Lavaca | 29 23 22 N | 096 57 33 W |
| Williamsburg Tank | Reservoir | 1428 | Hudspeth | 31 33 22 N | 105 34 55 W |
| Williamson | Populated Place | 216 | Travis | 30 13 34 N | 097 49 21 W |
| Williamson Addition Colonia | Populated Place | 170 | Duval | 27 52 13 N | 098 37 13 W |
| Williamson Branch | Stream | | Bell | 31 04 33 N | 097 17 21 W |
| Williamson Branch | Stream | | Polk | 30 33 23 N | 094 53 23 W |
| Williamson Cemetery | Cemetery | 94 | Madison | 30 50 06 N | 096 08 01 W |
| Williamson Cemetery | Cemetery | 9 | Orange | 30 14 16 N | 094 01 14 W |
| Williamson Church | Church | 9 | Orange | 30 13 37 N | 094 01 14 W |
| Williamson County | Civil | 200 | Williamson | 30 39 01 N | 097 36 01 W |
| Williamson County Academy | School | 297 | Williamson | 30 34 15 N | 097 51 12 W |
| Williamson County Academy | School | 179 | Williamson | 30 34 38 N | 097 25 03 W |
| Williamson County Courthouse Historical District | Locale | 229 | Williamson | 30 38 17 N | 097 40 35 W |
| Williamson Creek | Stream | | Titus | 33 00 54 N | 094 51 54 W |
| Williamson Creek | Stream | | Travis | 30 11 20 N | 097 43 20 W |
| Williamson Creek Cemetery | Cemetery | 195 | Travis | 30 11 54 N | 097 46 01 W |
| Williamson Dam | Dam | 453 | Eastland | 32 26 24 N | 098 59 01 W |
| Williamson Lake | Lake | 75 | Montgomery | 30 25 04 N | 095 33 12 W |
| Williamson Mountain | Summit | 341 | Coryell | 31 17 14 N | 097 50 07 W |
| Williamson Park | Park | 93 | Brazos | 30 38 38 N | 096 21 50 W |
| Willian McDonald Park | Park | 178 | Tarrant | 32 42 14 N | 097 14 15 W |
| Willie B Whitehead Ranch | Locale | 639 | Val Verde | 30 12 51 N | 100 45 26 W |
| Willie Banker Junior House | Building | 30 | Wharton | 29 18 48 N | 096 05 15 W |
| Willie Branch | Stream | | Lee | 30 18 20 N | 097 07 27 W |
| Willie Brown Elementary School | School | 188 | Tarrant | 32 34 12 N | 097 06 45 W |
| Willie Creek | Stream | | Kendall | 30 02 22 N | 098 41 15 W |
| Willie E Williams Elementary School | School | 86 | Montgomery | 30 13 01 N | 095 44 53 W |
| Willie Slough | Gut | 1 | Jefferson | 29 44 51 N | 094 10 54 W |
| Willie Tank | Reservoir | 95 | Jim Wells | 28 00 10 N | 098 11 45 W |
| Willincham Cemetery | Cemetery | 76 | Washington | 30 14 04 N | 096 16 30 W |
| Willing Workers Baptist Church | Church | 166 | Dallas | 32 42 06 N | 096 47 21 W |
| Willing Workers Baptist Church | Church | 15 | Harris | 29 39 39 N | 095 21 41 W |
| Willingham Bay | Bay | 115 | Smith | 32 13 17 N | 095 10 34 W |
| Willingham Branch | Stream | | Bell | 30 56 16 N | 097 36 26 W |
| Willingham Lake | Reservoir | 304 | Uvalde | 29 17 43 N | 099 49 07 W |
| Willingham Lake Dam | Dam | 304 | Uvalde | 29 17 43 N | 099 49 07 W |
| Willingham Springs Church (historical) | Church | 220 | Bell | 30 55 05 N | 097 37 14 W |
| Willis | Populated Place | 116 | Montgomery | 30 25 30 N | 095 28 48 W |
| Willis Cemetery | Cemetery | 104 | Freestone | 31 37 23 N | 095 59 05 W |
| Willis Creek | Stream | | Angelina | 31 23 41 N | 094 39 50 W |
| Willis Creek | Stream | | Brown | 31 41 36 N | 098 56 14 W |
| Willis Creek | Stream | | Williamson | 30 42 06 N | 097 18 40 W |
| Willis Creek Park | Park | 162 | Williamson | 30 41 31 N | 097 23 39 W |
| Willis Creek Wildlife Area | Park | 159 | Williamson | 30 42 25 N | 097 24 02 W |
| Willis Ditch | Canal | 91 | Cherokee | 32 01 50 N | 095 00 08 W |
| Willis High School | School | 96 | Montgomery | 30 23 29 N | 095 28 49 W |
| Willis Lake | Lake | 14 | Liberty | 30 17 11 N | 094 48 05 W |
| Willis Lake | Reservoir | 510 | Comanche | 31 45 43 N | 098 41 31 W |
| Willis Lake | Reservoir | 549 | Kerr | 30 03 13 N | 099 19 49 W |
| Willis Lake Dam | Dam | 510 | Comanche | 31 45 43 N | 098 41 31 W |
| Willis Lake Dam | Dam | 549 | Kerr | 30 03 13 N | 099 19 49 W |
| Willis Lane Elementary School | School | 221 | Tarrant | 32 54 15 N | 097 14 49 W |
| Willis Lookout | Locale | 123 | Montgomery | 30 28 38 N | 095 24 13 W |
| Willis Lookout | Locale | 126 | Montgomery | 30 28 36 N | 095 24 16 W |
| Willis Marsh | Swamp | 15 | Liberty | 29 59 23 N | 094 30 55 W |
| Willis N Clark Airport | Airport | 928 | Roberts | 35 45 40 N | 100 45 08 W |
| Willis Oil Field | Oilfield | 65 | Montgomery | 30 27 44 N | 095 33 18 W |