Eratoena sulcifera is a species of small sea snail, a marine gastropod mollusk in the family Eratoidae, the false cowries or trivias.
The shell size varies between 3 mm and 5 mm. It is typically cream, pink, or pale green in color, and sometimes faintly banded. The shell possesses a dorsal longitudinal groove that is often very indistinct as well as labial and columellar teeth.
This marine species occurs in the Indo-West Pacific. Its presence has been noted in French Polynesia and off the Aldabra Atoll. The type locality of this species is contained in the Cape of Good Hope, providing a reference point for its original description and geographical distribution.