| Name | Designated | District | Coordinates | Description | Image |
|---|
| Cape Taputapu | 1972 | Western | 14°19′17″S170°50′36″W / 14.3214°S 170.8432°W /-14.3214; -170.8432 (Cape Taputapu National Natural Landmark) | A natural exhibit of shoreline, offshore volcanic rocks, and blowholes sculpted by heavy sea-wave action |  |
| Fogamaʻa Crater | 1972 | Western | 14°21′24″S170°45′13″W / 14.3568°S 170.7535°W /-14.3568; -170.7535 (Fogama'a Crater National Natural Landmark) | One of very few illustrations of the most recent episode of volcanism in American Samoa |  | |
| Matafao Peak | 1972 | Eastern | 14°17′38″S170°42′16″W / 14.2939°S 170.7045°W /-14.2939; -170.7045 (Matafao Peak National Natural Landmark) | One of five great masses of volcanic rocks that extruded as molten magma during the major episodes of volcanism that created Tutuila Island |  |
| Leʻala Shoreline | 1972 | Western | 14°21′36″S170°46′38″W / 14.3600°S 170.7773°W /-14.3600; -170.7773 (Le'ala Shoreline National Natural Landmark) | A young flow of basalt, inter-bedded with layers oftuff, that illustrates erosion by wave action |  |
Rainmaker Mountain
(Mount Pioa) | 1972 | Eastern | 14°16′21″S170°39′21″W / 14.2725°S 170.6558°W /-14.2725; -170.6558 (Rainmaker Mountain (Mt. Pioa) National Natural Landmark) | An outstanding example of the giganticplugs that created Tutuila Island |  |
| Vai'ava Strait | 1972 | Eastern | 14°14′21″S170°40′17″W / 14.2393°S 170.6715°W /-14.2393; -170.6715 (Vai'ava Strait National Natural Landmark) | A classic illustration of steep cliffs and erosion-resistant outliers formed by wave action on a volcanic mass |  |
| Aunu'u Island | 1972 | Eastern | 14°17′00″S170°33′12″W / 14.2833°S 170.5534°W /-14.2833; -170.5534 (Aunu'u Island National Natural Landmark) | The site of recent episodes of volcanism backed by a geologically recent tuff cone |  |
