Matafao Peak, Mountain summit in Tutuila, American Samoa.

Matafao Peak is the highest summit on Tutuila Island, rising 653 meters above sea level. The mountain dominates the landscape and forms a prominent landmark visible from many points on the island.

The summit was designated as a National Natural Landmark in recognition of its exceptional geological features. This designation acknowledges its ecological importance within the broader Pacific island ecosystem.

The name Matafao comes from Samoan and means "Spear Head"; it is also said to refer to the view from the summit, which in fair weather reaches as far as Mount Fao on Upolu Island. The village of Fagatogo lies at the foot of the mountain.

The hike starts from the high point of the Pago Pago-to-Fagasa Road; no marked trail system or maintained observation points exist on the mountain. The upper slopes are covered in dense montane scrub, and the National Natural Landmark designation applies above the 150-meter level.

The fern Dipteris conjugata, whose leaves resemble those of Tacca, is rare across the Samoan Islands and has been recorded only on Matafao Peak and Rainmaker Mountain. Nearly half of the characteristic tree species on the mountain are endemic to Samoa, and Astronidium and Cyrtandra geminata are confined to Tutuila's trachyte plugs.