Nerita is a genus of medium-sized to small sea snails with a gill and an operculum, marine gastropod molluscs in the subfamily Neritinae of the family Neritidae, the nerites.

Species of Nerita can be found worldwide in tropical waters in the middle and upper intertidal zones.

The ventral side has a large columellar callus or parietal wall.

Several subgenera have been proposed over the course of time, but various authors in the past could not agree on the placement of many species.

[2] However, inconsistencies still remain over the use and validity of many taxonomic names,[3] because species show a wide variety of colors, patterns and even details of shell morphology, which has given rise to many synonyms.