There are 5 National Natural Landmarks in Mississippi. [1]
| Name | Image | Date | Location | County | Ownership | Description | 
|---|---|---|---|---|---|---|
| Bienville Pines Scenic Area |   | 1976 | 32°20′57″N89°28′14″W / 32.349151°N 89.470470°W | Scott | federal | One of the largest protected old-growth loblolly pine stands in the region. Part of Bienville National Forest. | 
| Chestnut Oak Disjunct | 1966 | Calhoun | private | An isolated stand of chestnut oak. | ||
| Green Ash-Overcup Oak-Sweetgum Research Natural Areas | 1976 | 32°46′00″N90°47′00″W / 32.766667°N 90.783333°W | Sharkey | federal | Three small parts of the Delta National Forest contain rare pristine tracts of bottomland hardwood trees. | |
| Harrell Prairie Hill |   | 1976 | 32°20′09″N89°26′23″W / 32.335833°N 89.439722°W | Scott | federal | The most representative remnants of the Jackson Prairie. Part of Bienville National Forest. | 
| Mississippi Petrified Forest |   | 1965 | 32°31′15″N90°19′23″W / 32.52073°N 90.32296°W | Madison | private | A relatively undisturbed accumulation of ancient fir and maple driftwood that was buried in Tertiary sands. | 
There are five National Natural Landmark sites located within the state of Mississippi.