Scutellastra kermadecensis is a species of true limpet, a marine gastropod mollusk in the family Patellidae.

[3] Original species description:[1] The large and massive shell is conical with the apex subcentral.

The exterior is whitish, apparently strongly ribbed when perfect, but the specimens described are everywhere deeply eroded.

Scutellastra kermadecensis commonly reaches shell lengths exceeding 135 mm (5.3 in).

It is the dominant grazing invertebrate between the low intertidal and shallow subtidal zones.