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 Cape Taputapu 1972 Western A natural exhibit of shoreline, offshore volcanic rocks, and blowholes sculpted by heavy sea-wave action Fogamaʻa Crater 1972 Western One of very few illustrations of the most recent episode of volcanism in American Samoa Matafao Peak 1972 Eastern 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 A young flow of basalt, inter-bedded with layers of tuff, that illustrates erosion by wave action Rainmaker Mountain(Mount Pioa) 1972 Eastern An outstanding example of the gigantic plugs that created Tutuila Island Vai'ava Strait 1972 Eastern A classic illustration of steep cliffs and erosion-resistant outliers formed by wave action on a volcanic mass Aunu'u Island 1972 Eastern The site of recent episodes of volcanism backed by a geologically recent tuff cone