This is a list of National Natural Landmarks (NNL) in American Samoa. All locations are on communally owned lands.
| Name | Designated | District | Coordinates | Description | Image | |
|---|---|---|---|---|---|---|
| 1972 | Western | -14.3214°N -170.8432°W | A natural exhibit of shoreline, offshore volcanic rocks, and blowholes sculpted by heavy sea-wave action | |||
| 1972 | Western | -14.3568°N -170.7535°W | One of very few illustrations of the most recent episode of volcanism in American Samoa | |||
| 1972 | Eastern | -14.2939°N -170.7045°W | One of five great masses of volcanic rocks that extruded as molten magma during the major episodes of volcanism that created Tutuila Island | |||
| 1972 | Western | -14.36°N -170.7773°W | A young flow of basalt, inter-bedded with layers of tuff, that illustrates erosion by wave action | |||
| 1972 | Eastern | -14.2725°N -170.6558°W | An outstanding example of the gigantic plugs that created Tutuila Island | |||
| 1972 | Eastern | -14.2393°N -170.6715°W | A classic illustration of steep cliffs and erosion-resistant outliers formed by wave action on a volcanic mass | |||
| 1972 | Eastern | -14.2833°N -170.5534°W | The site of recent episodes of volcanism backed by a geologically recent tuff cone | |||