List of National Natural Landmarks in Iowa
There are 8 National Natural Landmarks in Iowa.
| Name | Image | Date | Location | County | Ownership | Description |
| Anderson Goose Lake | Iowa | Private | One of the few essentially natural glacial pothole lakes remaining in Iowa. | |||
| Cayler Prairie | Dickinson | State | An example of the increasingly rare virgin prairie grassland. | |||
| Cold Water Cave | Winneshiek | Private | An exceptional example of an extensive cave system well decorated with speleothems. | |||
| Dewey's Pasture and Smith's Slough | Clay, Palo Alto | State | Pothole lakes created during the last glacial epoch. | |||
| Hayden Prairie State Preserve | Howard | State | A true prairie remnant. | |||
| Loess Hills | Harrison, Monona | State, private | The best examples of loess topography in the Missouri River Bluffs region. | |||
| White Pine Hollow State Forest | Dubuque | State | The only known remaining white pine tract in Iowa. |