Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Old Corbett Place | Populated Place | 1082 | Brewster | 30 01 31 N | 103 02 39 W |
| Old Cotton Exchange Building | Building | 92 | Nacogdoches | 31 36 13 N | 094 39 14 W |
| Old Cottonwood Cemetery | Cemetery | 113 | Brazos | 30 50 17 N | 096 21 14 W |
| Old Cottonwood Spring | Spring | 415 | Coryell | 31 25 43 N | 098 06 39 W |
| Old Cottonwood Tank | Reservoir | 701 | Hall | 34 26 18 N | 100 53 18 W |
| Old County Cemetery | Cemetery | 1013 | Terry | 33 11 20 N | 102 17 26 W |
| Old County Farm Cemetery | Cemetery | 69 | Lavaca | 29 25 17 N | 096 56 15 W |
| Old Coyote Windmill | Locale | 39 | Brooks | 26 49 53 N | 098 12 05 W |
| Old Dagger Tank | Reservoir | 1269 | Hudspeth | 31 03 51 N | 105 20 57 W |
| Old Dailey Family Cemetery | Cemetery | 82 | Houston | 31 28 50 N | 095 39 26 W |
| Old Davy | Populated Place | 130 | DeWitt | 29 05 01 N | 097 37 38 W |
| Old Diana | Populated Place | 92 | Upshur | 32 44 26 N | 094 44 36 W |
| Old Dime Box | Populated Place | 118 | Lee | 30 22 38 N | 096 51 47 W |
| Old Dublin Memorial Park | Cemetery | 446 | Erath | 32 03 53 N | 098 20 07 W |
| Old Edinburg Cemetery | Cemetery | 29 | Hidalgo | 26 18 36 N | 098 07 39 W |
| Old Edith Lochausen Place | Populated Place | 1184 | Brewster | 30 06 55 N | 103 05 22 W |
| Old Elam Church | Church | 86 | Robertson | 30 52 30 N | 096 36 15 W |
| Old Electra City Dam | Dam | 344 | Wichita | 34 05 12 N | 098 55 01 W |
| Old Electra City Lake | Reservoir | 344 | Wichita | 34 05 12 N | 098 55 01 W |
| Old Elwood | Populated Place | 80 | Madison | 31 04 19 N | 095 48 11 W |
| Old Elwood Cemetery | Cemetery | 162 | Fannin | 33 48 28 N | 096 05 35 W |
| Old Emma Cemetery | Cemetery | 942 | Crosby | 33 36 42 N | 101 24 43 W |
| Old Encinitos Windmill | Locale | 67 | Starr | 26 46 44 N | 098 22 57 W |
| Old Enon Church | Church | 125 | Houston | 31 31 02 N | 095 26 42 W |
| Old Enon School | School | 125 | Houston | 31 31 02 N | 095 26 42 W |
| Old Enterprise School (historical) | School | 107 | Houston | 31 26 16 N | 095 16 53 W |
| Old Eureka Mill Reservoir | Reservoir | 321 | Young | 32 57 36 N | 098 46 01 W |
| Old Eureka Mill Reservoir Dam | Dam | 322 | Young | 32 57 36 N | 098 46 01 W |
| Old Faithful Spring | Spring | 445 | Real | 29 40 48 N | 100 00 51 W |
| Old Farm Camp | Locale | 1015 | Oldham | 35 31 45 N | 102 36 07 W |
| Old Farm Crossing | Populated Place | 1007 | Oldham | 35 31 17 N | 102 35 60 W |
| Old Farwell Cemetery | Cemetery | 1256 | Parmer | 34 20 53 N | 103 02 31 W |
| Old Fashioned Church of God in Christ | Church | 15 | Harris | 29 40 40 N | 095 22 08 W |
| Old Federal Building-Federal Courthouse | Building | 93 | Angelina | 31 20 20 N | 094 43 35 W |
| Old Feed Pen Windmill | Locale | 658 | Kerr | 30 10 05 N | 099 38 47 W |
| Old Fellows and Rebekahs Home | Building | 156 | Ellis | 32 18 41 N | 096 36 45 W |
| Old First Methodist Episcopal Church South | Church | 30 | Wharton | 29 18 46 N | 096 05 56 W |
| Old Fish Farm Pond Number 1 | Reservoir | 248 | Maverick | 28 42 01 N | 100 27 25 W |
| Old Fish Farm Pond Number 1 Dam | Dam | 248 | Maverick | 28 42 01 N | 100 27 25 W |
| Old Fish Farm Pond Number 2 | Reservoir | 245 | Maverick | 28 41 55 N | 100 27 25 W |
| Old Fish Farm Pond Number 2 Dam | Dam | 245 | Maverick | 28 41 55 N | 100 27 25 W |
| Old Fish Farm Pond Number 3 | Reservoir | 243 | Maverick | 28 41 49 N | 100 27 25 W |
| Old Fish Farm Pond Number 3 Dam | Dam | 243 | Maverick | 28 41 49 N | 100 27 25 W |
| Old Fish Farm Pond Number 4 | Reservoir | 237 | Maverick | 28 41 37 N | 100 27 25 W |
| Old Fish Farm Pond Number 4 Dam | Dam | 237 | Maverick | 28 41 37 N | 100 27 25 W |
| Old Flag Windmill | Locale | 848 | Winkler | 31 40 27 N | 102 51 04 W |
| Old Flat Top | Summit | 918 | Briscoe | 34 24 09 N | 101 05 58 W |
| Old Flatonia | Populated Place | 147 | Fayette | 29 39 47 N | 097 05 27 W |
| Old Flatonia Cemetery | Cemetery | 147 | Fayette | 29 39 20 N | 097 05 25 W |
| Old Florey Park | Park | 964 | Andrews | 32 27 16 N | 102 34 13 W |
| Old Folks Home | Building | 108 | Walker | 30 33 33 N | 095 30 27 W |
| Old Forest Avenue High School | School | 135 | Dallas | 32 46 16 N | 096 45 54 W |
| Old Forker Ultralight Airport | Airport | 4 | Galveston | 29 19 08 N | 095 05 09 W |
| Old Fort Anahuac | Locale | 6 | Chambers | 29 45 23 N | 094 41 15 W |
| Old Fort Bliss | Locale | 1143 | El Paso | 31 45 59 N | 106 30 37 W |
| Old Fort Cemetery | Cemetery | 906 | Pecos | 30 53 32 N | 102 52 42 W |
| Old Fort Clark Guardhouse Museum | Building | 369 | Kinney | 29 21 01 N | 100 25 04 W |
| Old Fort Park | Park | 180 | Hill | 32 00 35 N | 097 23 44 W |
| Old Fort Parker State Historical Park | Park | 152 | Limestone | 31 33 49 N | 096 32 54 W |
| Old Fort Pena Colorada | Locale | 1197 | Brewster | 30 09 49 N | 103 17 16 W |
| Old Fort San Jacinto | Locale | 2 | Galveston | 29 19 46 N | 094 45 29 W |
| Old Fouke Cemetery | Cemetery | 125 | Wood | 32 37 33 N | 095 16 41 W |
| Old Foundry Cemetery | Cemetery | 101 | Marion | 32 50 59 N | 094 17 41 W |
| Old Freitag Place | Populated Place | 718 | Irion | 31 27 22 N | 101 05 41 W |
| Old Frio County Jail | Building | 193 | Frio | 28 53 15 N | 099 05 29 W |
| Old Galveston Customhouse | Building | 1 | Galveston | 29 18 20 N | 094 47 24 W |
| Old Gay Hill Church | Church | 108 | Washington | 30 17 24 N | 096 27 15 W |
| Old Georgetown High School | School | 229 | Williamson | 30 38 02 N | 097 40 21 W |
| Old German Free School Museum | Building | 152 | Travis | 30 16 14 N | 097 44 12 W |
| Old Gilpin School | School | 579 | Childress | 34 34 49 N | 100 22 56 W |
| Old Glory | Populated Place | 509 | Stonewall | 33 07 47 N | 100 03 21 W |
| Old Glory Cemetery | Cemetery | 496 | Stonewall | 33 06 29 N | 100 01 06 W |
| Old Glory Oil Field | Oilfield | 491 | Stonewall | 33 14 22 N | 100 03 14 W |
| Old Gooch Cemetery | Cemetery | 470 | Mason | 30 45 15 N | 099 13 20 W |
| Old Goodnight Tank | Reservoir | 1032 | Oldham | 35 31 09 N | 102 29 02 W |
| Old Goose Pond | Lake | 197 | Grayson | 33 43 58 N | 096 45 44 W |
| Old Goose Pond | Lake | 121 | Red River | 33 42 46 N | 094 56 54 W |
| Old Gordon Cemetery | Cemetery | 285 | Palo Pinto | 32 33 44 N | 098 21 39 W |
| Old Goree Cemetery | Cemetery | 448 | Knox | 33 28 35 N | 099 35 18 W |
| Old Grape Park | Park | 156 | Smith | 32 21 58 N | 095 17 36 W |
| Old Grapevine Well | Well | 1170 | Culberson | 31 34 36 N | 104 16 12 W |
| Old Grounds Cemetery | Cemetery | 194 | Collin | 33 19 44 N | 096 24 21 W |
| Old Groves School | School | 75 | Houston | 31 17 38 N | 095 36 23 W |
| Old Gussettville Cemetery | Cemetery | 35 | Live Oak | 28 18 21 N | 098 02 20 W |
| Old H O Wooten Grocery | Building | 491 | Jones | 32 56 34 N | 099 48 07 W |
| Old Hancock Trail | Trail | 284 | Comal | 29 55 06 N | 098 13 31 W |
| Old Hardin Cemetery | Cemetery | 21 | Liberty | 30 06 05 N | 094 45 56 W |
| Old Hat Burnout | Area | 35 | Hardin | 30 23 03 N | 094 34 02 W |
| Old Headquarters Tank | Reservoir | 659 | Motley | 34 00 58 N | 100 35 57 W |
| Old Headquarters Windmill | Locale | 974 | Andrews | 32 06 45 N | 102 53 29 W |
| Old Headquarters Windmill | Locale | 1014 | Andrews | 32 20 12 N | 102 53 01 W |
| Old Headquarters Windmill | Locale | 877 | Midland | 31 59 23 N | 102 10 12 W |
| Old Headquarters Windmill | Locale | 1216 | Oldham | 35 19 12 N | 102 30 42 W |
| Old Headquarters Windmill | Locale | 866 | Pecos | 30 52 32 N | 102 36 39 W |
| Old Headquarters Windmill | Locale | 857 | Pecos | 30 57 29 N | 102 41 19 W |
| Old Headquarters Windmills | Locale | 851 | Crane | 31 38 42 N | 102 40 45 W |
| Old Hebbronville Cemetery | Cemetery | 164 | Jim Hogg | 27 18 35 N | 098 39 55 W |
| Old Hidalgo Courthouse and Buildings | Building | 32 | Hidalgo | 26 05 59 N | 098 15 46 W |
| Old Hidalgo School | School | 31 | Hidalgo | 26 05 55 N | 098 15 35 W |
| Old High Hill Cemetery | Cemetery | 101 | Fayette | 29 42 09 N | 096 55 46 W |
| Old Hill Cemetery | Cemetery | 237 | Johnson | 32 21 14 N | 097 14 10 W |
| Old Home Church | Church | 80 | Shelby | 31 55 41 N | 094 10 06 W |
| Old Home Draw | Valley | | Armstrong | 34 51 14 N | 101 32 33 W |
| Old Hopewell Cemetery | Cemetery | 142 | Smith | 32 23 34 N | 095 01 43 W |
| Old House Place | Populated Place | 1029 | Reeves | 31 13 10 N | 103 58 39 W |
| Old House Slough | Gut | 50 | Marion | 32 45 24 N | 094 09 39 W |
| Old House Windmill | Locale | 832 | Crane | 31 36 16 N | 102 42 55 W |
| Old House Windmill | Locale | 1553 | Jeff Davis | 30 39 36 N | 104 19 48 W |
| Old House Windmill | Locale | 619 | Val Verde | 30 12 55 N | 100 50 55 W |
| Old Houston Highway Colonia | Populated Place | 71 | Bee | 28 25 09 N | 097 43 27 W |