Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Indio Lake | Lake | 210 | Maverick | 28 26 49 N | 100 19 36 W |
| Indio Number 1 Colonia | Populated Place | 107 | Starr | 26 33 23 N | 099 05 39 W |
| Indio Number 2 Colonia | Populated Place | 107 | Starr | 26 33 19 N | 099 05 43 W |
| Indio Ranch | Locale | 1235 | Hudspeth | 30 46 37 N | 105 00 59 W |
| Indio Tank | Reservoir | 241 | Maverick | 28 25 58 N | 100 10 28 W |
| Indio Tank | Reservoir | 211 | Zavala | 28 54 35 N | 099 39 51 W |
| Industrial Canal | Canal | 0 | Galveston | 29 21 46 N | 094 54 31 W |
| Industrial Canal | Canal | 11 | Nueces | 27 48 57 N | 097 25 12 W |
| Industry | Populated Place | 95 | Austin | 29 58 21 N | 096 30 08 W |
| Inez | Populated Place | 20 | Victoria | 28 54 14 N | 096 47 17 W |
| Infant Jesus Church | Church | 10 | Hardin | 30 14 14 N | 094 12 24 W |
| Infant Jesus of Prague Church | Church | 231 | Bexar | 29 27 28 N | 098 34 00 W |
| Infiernillo Artesian Well | Well | 1 | Kleberg | 27 17 18 N | 097 36 33 W |
| Infomart Heliport | Airport | 123 | Dallas | 32 48 10 N | 096 49 17 W |
| Inge Mountain | Summit | 294 | Uvalde | 29 10 53 N | 099 45 56 W |
| Ingham Ranch | Locale | 682 | Sutton | 30 33 53 N | 100 47 57 W |
| Ingle-Doolittle Colonia | Populated Place | 29 | Hidalgo | 26 22 42 N | 098 06 44 W |
| Ingleses Windmill | Locale | 81 | Brooks | 27 14 15 N | 098 19 27 W |
| Ingleses Windmill | Locale | 83 | Brooks | 27 15 14 N | 098 19 39 W |
| Ingleside | Populated Place | 4 | San Patricio | 27 52 40 N | 097 12 42 W |
| Ingleside Cemetery | Cemetery | 267 | Medina | 29 21 15 N | 099 08 01 W |
| Ingleside City Park | Park | 4 | San Patricio | 27 52 41 N | 097 12 60 W |
| Ingleside Cove | Bay | 2 | Nueces | 27 50 19 N | 097 13 49 W |
| Ingleside High School | School | 4 | San Patricio | 27 52 39 N | 097 13 07 W |
| Ingleside Offshore Services Heliport | Airport | 6 | San Patricio | 27 50 42 N | 097 13 26 W |
| Ingleside on the Bay Historical Society Museum | Building | 6 | San Patricio | 27 51 29 N | 097 12 24 W |
| Ingleside On-the-Bay | Populated Place | 4 | San Patricio | 27 49 46 N | 097 13 24 W |
| Ingleside Point | Cape | 5 | San Patricio | 27 49 56 N | 097 14 06 W |
| Inglewood Baptist Church | Church | 161 | Dallas | 32 43 06 N | 097 00 46 W |
| Inglish Cemetery | Cemetery | 177 | Fannin | 33 34 46 N | 096 10 08 W |
| Ingram | Populated Place | 526 | Kerr | 30 04 39 N | 099 14 25 W |
| Ingram - Tom Moore High School | School | 509 | Kerr | 30 04 25 N | 099 14 50 W |
| Ingram Cemetery | Cemetery | 103 | Panola | 32 16 39 N | 094 09 57 W |
| Ingram Cemetery | Cemetery | 91 | Sabine | 31 33 13 N | 093 55 56 W |
| Ingram Cemetery | Cemetery | 136 | Smith | 32 27 48 N | 095 08 01 W |
| Ingram Cemetery | Cemetery | 140 | Travis | 30 09 44 N | 097 33 16 W |
| Ingram Cemetery | Cemetery | 121 | Wood | 32 49 34 N | 095 26 03 W |
| Ingram Church | Church | 90 | Sabine | 31 33 12 N | 093 55 58 W |
| Ingram Elementary School | School | 529 | Kerr | 30 04 40 N | 099 14 28 W |
| Ingram Lake Dam | Dam | 511 | Kerr | 30 04 13 N | 099 15 19 W |
| Ingram Middle School | School | 509 | Kerr | 30 04 25 N | 099 14 50 W |
| Ingram Park | Park | 102 | Gregg | 32 30 54 N | 094 43 27 W |
| Ingram Park Mall | Locale | 208 | Bexar | 29 28 08 N | 098 26 11 W |
| Ingram Park Shopping Center | Locale | 254 | Bexar | 29 28 10 N | 098 37 20 W |
| Ingrum Ranch | Locale | 304 | Uvalde | 29 12 55 N | 099 55 40 W |
| Ink Basin | Basin | 1102 | Yoakum | 33 04 06 N | 102 55 16 W |
| Inkman Spring | Spring | 705 | Nolan | 32 25 56 N | 100 28 41 W |
| Inks Dam National Fish Hatchery | Locale | 267 | Burnet | 30 43 23 N | 098 23 17 W |
| Inks Dam Substation | Building | 31 | Llano | 30 43 54 N | 098 23 09 W |
| Inks Lake | Reservoir | 268 | Burnet | 30 43 52 N | 098 23 05 W |
| Inks Lake State Park | Park | 290 | Burnet | 30 43 52 N | 098 22 14 W |
| Inks Lake State Park Trail | Trail | 282 | Burnet | 30 44 13 N | 098 22 14 W |
| Inland Lake | Lake | 26 | Hidalgo | 26 04 20 N | 098 07 33 W |
| Inlet Feeder Canal | Canal | 987 | Reeves | 30 57 21 N | 103 45 12 W |
| Inman Cemetery | Cemetery | 22 | Newton | 30 43 09 N | 093 37 15 W |
| Inman Well | Well | 1231 | Dallam | 36 04 45 N | 102 38 20 W |
| Inn at Brushy Creek | Building | 222 | Williamson | 30 30 56 N | 097 41 23 W |
| Inner Bar Channel | Channel | 7 | Galveston | 29 20 49 N | 094 45 22 W |
| Inner Basin | Harbor | -3 | Aransas | 27 50 58 N | 097 03 38 W |
| Inner City Elementary School | School | 4 | Galveston | 29 22 42 N | 094 57 33 W |
| Insall Cemetery | Cemetery | 419 | Kendall | 29 58 30 N | 098 50 23 W |
| Insights - El Paso Science Museum | Building | 1132 | El Paso | 31 45 31 N | 106 29 10 W |
| Insights Learning Center | School | 201 | Tarrant | 32 43 52 N | 097 15 14 W |
| Insley Park | Park | 2 | Galveston | 29 22 60 N | 094 53 47 W |
| Inspiration Colonia | Populated Place | 53 | Hidalgo | 26 16 49 N | 098 20 18 W |
| Inspiration Heights Colonia | Populated Place | 52 | Hidalgo | 26 17 29 N | 098 20 11 W |
| Inspiration Point | Cape | 260 | Dallas | 32 34 11 N | 096 59 13 W |
| Inspiration Point | Cliff | 214 | Tarrant | 32 47 41 N | 097 24 52 W |
| Inspiration Point | Summit | 335 | Palo Pinto | 32 41 34 N | 098 07 01 W |
| Inspiration Point Baptist Church | Church | 213 | Tarrant | 32 47 25 N | 097 24 05 W |
| Inspiration Point Colonia | Populated Place | 52 | Hidalgo | 26 19 06 N | 098 19 53 W |
| Inspiration Rd Number 1 Colonia | Populated Place | 52 | Hidalgo | 26 17 14 N | 098 20 14 W |
| Inspiration Rd Number 2 Colonia | Populated Place | 52 | Hidalgo | 26 17 11 N | 098 20 11 W |
| Inspiration Rd Number 3 Colonia | Populated Place | 52 | Hidalgo | 26 17 11 N | 098 20 07 W |
| Institute for Rehabilitation and Research | Hospital | 14 | Harris | 29 42 36 N | 095 23 42 W |
| Institute of Texan Cultures | Building | 194 | Bexar | 29 25 02 N | 098 28 55 W |
| Institute Park | Park | 14 | Harris | 29 41 23 N | 095 22 23 W |
| Integrity Park | Park | 204 | Denton | 33 05 14 N | 097 11 41 W |
| Inter-City School | School | 4 | Galveston | 29 22 43 N | 094 57 35 W |
| Intermedics Heliport | Airport | 9 | Brazoria | 29 12 12 N | 095 26 15 W |
| International and Great Northern Railroad Passenger Station | Building | 200 | Bexar | 29 25 38 N | 098 30 19 W |
| International Baptist Church | Church | 22 | Harris | 29 50 51 N | 095 23 44 W |
| International Bible College | School | 275 | Bexar | 29 27 56 N | 098 35 07 W |
| International Boundary Marker | Park | 68 | Panola | 32 02 03 N | 094 02 35 W |
| International Bridge | Bridge | 7 | Cameron | 25 53 30 N | 097 30 17 W |
| International Bridge | Bridge | 266 | Val Verde | 29 19 37 N | 100 55 38 W |
| International Dam | Dam | 1133 | El Paso | 31 45 42 N | 106 30 32 W |
| International Falcon Lake | Reservoir | 92 | Starr | 26 33 31 N | 099 09 43 W |
| International Falcon Lake Dam | Dam | 92 | Starr | 26 33 31 N | 099 09 43 W |
| International Ferry | Locale | 35 | Hidalgo | 26 14 21 N | 098 33 54 W |
| International Museum of Art | Building | 1140 | El Paso | 31 46 13 N | 106 28 55 W |
| International Museum of Cultures | Building | 226 | Dallas | 32 39 54 N | 096 57 08 W |
| International Newcomer Academy - Fort Worth | School | 204 | Tarrant | 32 42 09 N | 097 26 58 W |
| International Order of Odd Fellows Cemetery | Cemetery | 150 | Milam | 30 39 46 N | 097 00 30 W |
| International Order of Odd Fellows Lodge | Building | 1 | Galveston | 29 18 20 N | 094 47 26 W |
| International Paper Company Dam | Dam | 67 | Cass | 33 14 42 N | 094 04 13 W |
| International Reservoir | Reservoir | 1133 | El Paso | 31 45 42 N | 106 30 32 W |
| International School of America | School | 235 | Bexar | 29 30 27 N | 098 30 53 W |
| International Word of God Fellowship Church | Church | 105 | Gregg | 32 31 54 N | 094 46 25 W |
| Interstate Forwarding Company Warehouse | Building | 141 | Dallas | 32 47 06 N | 096 46 40 W |
| Intracare Medical Center Hospital | Hospital | 17 | Harris | 29 41 35 N | 095 23 57 W |
| Intracare North Hospital | Hospital | 31 | Harris | 30 01 55 N | 095 26 17 W |
| Inwood | Populated Place | 192 | Dallas | 32 55 50 N | 096 49 18 W |
| Inwood Church | Church | 161 | Dallas | 32 50 40 N | 096 49 14 W |
| Inwood Park | Park | 11 | Nueces | 27 44 29 N | 097 25 44 W |
| Inwood Soccer Center | Park | 194 | Dallas | 32 57 01 N | 096 49 47 W |
| Iola | Populated Place | 102 | Grimes | 30 46 19 N | 096 04 30 W |
| Iolanthe (historical) | Populated Place | 725 | Sterling | 32 02 55 N | 101 01 22 W |
| Iona | Populated Place | 293 | Parker | 32 40 52 N | 097 33 15 W |
| Iona Springs | Spring | 612 | Kimble | 30 42 31 N | 099 41 31 W |