List of National Natural Landmarks in Texas

There are 21 National Natural Landmarks in Texas.

Name	Image	Date	Location	County	Ownership	Description
Attwater Prairie Chicken Preserve				Colorado	federal/US Fish & Wildlife Service	Contains the only significant segment of gulf coastal prairie.
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				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				Sutton	private	Contains unusual formations, such as bladed helictites and coralloid growths
Devil's Sinkhole				Edwards	state/Texas Department of Parks and Wildlife	A deep, bell-shaped, collapsed limestone sink.
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				Hays	private	Houses at least 36 species of cave fauna.
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				Tarrant	municipal/City of Fort Worth	Contains outstanding examples of the unique oak-hickory forest associations called cross timbers.
Greenwood Canyon				Montague	private	A rich source of early Cretaceous mammalian fossils.
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				Blanco	private	An unspoiled example of the limestone bluff communities of the Edwards Plateau.
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				Bandera, Real	state/Texas Department of Parks and Wildlife	An excellent illustration of Edwards Plateau flora and fauna.
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				Ector	county	Contains two meteorite impact craters. The largest is in diameter.
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				Hidalgo	federal/US Fish & Wildlife Service	A living museum of the lowland forested area of the Lower Rio Grande Valley.
Natural Bridge Caverns				Comal	private	A multilevel cavern system containing unusual speleothems and intricate helictites.
Cave Without a Name				Kendall	private	Contains rare and nationally outstanding examples of speleothems.