Cerithidea is a genus of medium-sized sea snails or mud snails, marine gastropod mollusks in the family Potamididae, the horn snails.

[2] There used to be three subgenera[3] in the genus Cerithidea: subgenus Cerithea, subgenus Cerithideopsis and subgenus Cerithideopsilla.

These have been brought to the status of genus.