# List of National Natural Landmarks in Texas

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There are 21 National Natural Landmarks in Texas.
| Name | Date | Location | County | Ownership | Description |
| Attwater Prairie Chicken Preserve | 1968 | 29°40′08″N 96°16′00″W﻿ / ﻿29.668827°N 96.266751°W﻿ / 29.668827; -96.266751﻿ (Attwater Prairie Chicken Preserve) | Colorado | federal/US Fish & Wildlife Service | Contains the only significant segment of gulf coastal prairie. |
| Bayside Resaca Area | 1980 | 26°13′45″N 97°20′50″W﻿ / ﻿26.229081°N 97.347231°W﻿ / 26.229081; -97.347231﻿ (Bayside Resaca Area) | Cameron | federal/US Fish & Wildlife Service | Located in Laguna Atascosa National Wildlife Refuge, contains an excellent example of a resaca. |
| Catfish Creek | 1983 | 31°54′27″N 95°54′09″W﻿ / ﻿31.90750°N 95.90250°W﻿ / 31.90750; -95.90250﻿ (Catfish Creek) | Anderson | state/Texas Department of Parks and Wildlife | One of the few remaining undisturbed riparian habitats in the western Gulf Coastal Plain |
| Caverns of Sonora | 1965 | 30°33′18″N 100°48′44″W﻿ / ﻿30.55500°N 100.81222°W﻿ / 30.55500; -100.81222﻿ (Caverns of Sonora) | Sutton | private | Contains unusual formations, such as bladed helictites and coralloid growths |
| Devil's Sinkhole | 1972 | 30°00′57″N 100°12′31″W﻿ / ﻿30.015773°N 100.208552°W﻿ / 30.015773; -100.208552﻿ (Devil's Sinkhole) | Edwards | state/Texas Department of Parks and Wildlife | A deep, bell-shaped, collapsed limestone sink. |
| Dinosaur Valley State Park | 1968 | 32°14′46″N 97°48′48″W﻿ / ﻿32.246194°N 97.813375°W﻿ / 32.246194; -97.813375﻿ (Dinosaur Valley State Park) | Somervell | state/Texas Department of Parks and Wildlife | The only known source of distinct and full-grown sauropod footprints. |
| Ezell's Cave | 1971 | | Hays | private | Houses at least 36 species of cave fauna. |
| Enchanted Rock | 1971 | 30°29′46″N 98°49′12″W﻿ / ﻿30.496033°N 98.819952°W﻿ / 30.496033; -98.819952﻿ (Enchanted Rock) | Gillespie, Llano | state/Texas Department of Parks and Wildlife | A classic illustration of a batholith and of the exfoliation process. |
| Fort Worth Nature Center and Refuge | 1980 | 32°50′36″N 97°28′38″W﻿ / ﻿32.843450°N 97.477225°W﻿ / 32.843450; -97.477225﻿ (Fort Worth Nature Center and Refuge) | Tarrant | municipal/City of Fort Worth | Contains outstanding examples of the unique oak-hickory forest associations called cross timbers. |
| Greenwood Canyon | 1975 | | Montague | private | A rich source of early Cretaceous mammalian fossils. |
| High Plains Natural Area | 1980 | 34°55′10″N 102°06′40″W﻿ / ﻿34.919517°N 102.111118°W﻿ / 34.919517; -102.111118﻿ (High Plains Natural Area) | Randall | federal/US Fish & Wildlife Service | One of the best developed, least disturbed natural shortgrass climax communities remaining in the Great Plains. Part of Buffalo Lake National Wildlife Refuge. |
| Independence Creek Preserve | 2024 | | Terrell | private | |
| Little Blanco River Bluff | 1982 | | Blanco | private | An unspoiled example of the limestone bluff communities of the Edwards Plateau. |
| Longhorn Cavern | 1971 | 30°41′04″N 98°21′03″W﻿ / ﻿30.684441°N 98.350970°W﻿ / 30.684441; -98.350970﻿ (Longhorn Cavern) | Burnet | state/Texas Department of Parks and Wildlife | State park contains an outstanding example of cave features formed during the phreatic phase of development. |
| Lost Maples State Natural Area | 1980 | 29°48′28″N 99°34′15″W﻿ / ﻿29.807719°N 99.570697°W﻿ / 29.807719; -99.570697﻿ (Lost Maples State Natural Area) | Bandera, Real | state/Texas Department of Parks and Wildlife | An excellent illustration of Edwards Plateau flora and fauna. |
| Muleshoe National Wildlife Refuge | 1980 | 33°57′19″N 102°46′37″W﻿ / ﻿33.955295°N 102.776973°W﻿ / 33.955295; -102.776973﻿ (Muleshoe National Wildlife Refuge) | Bailey | federal/US Fish & Wildlife Service | Saline lake beds, and shortgrass grama grasslands characteristic of the high plains. |
| Odessa Meteor Crater | 1965 | 31°45′25″N 102°28′45″W﻿ / ﻿31.756998°N 102.479125°W﻿ / 31.756998; -102.479125﻿ (Odessa Meteor Crater) | Ector | county | Contains two meteorite impact craters. The largest is 550 feet (170 m) in diameter. |
| Palo Duro Canyon State Park | 1976 | 34°59′05″N 101°42′07″W﻿ / ﻿34.984709°N 101.701867°W﻿ / 34.984709; -101.701867﻿ (Palo Duro Canyon State Park) | Armstrong, Randall | state/Texas Department of Parks and Wildlife | Spectacular canyon that is an excellent example of a landform created by running water. |
| Santa Ana National Wildlife Refuge | 1966 | 26°05′07″N 98°08′04″W﻿ / ﻿26.08522°N 98.13448°W﻿ / 26.08522; -98.13448﻿ (Santa Ana National Wildlife Refuge) | Hidalgo | federal/US Fish & Wildlife Service | A living museum of the lowland forested area of the Lower Rio Grande Valley. |
| Natural Bridge Caverns | 1971 | 29°41′32″N 98°20′34″W﻿ / ﻿29.692351°N 98.342760°W﻿ / 29.692351; -98.342760﻿ (Natural Bridge Caverns) | Comal | private | A multilevel cavern system containing unusual speleothems and intricate helictites. |
| Cave Without a Name | 2009 | 29°52′45″N 98°38′31″W﻿ / ﻿29.8791769°N 98.6419260°W﻿ / 29.8791769; -98.6419260﻿ (Cave Without a Name) | Kendall | private | Contains rare and nationally outstanding examples of speleothems. |