Crithe is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Cystiscidae.

These tiny gastropods have a shell which is colorless and is transparent when fresh.

This genus is found in the Indo-Pacific.

Shell minute to small, white, hyaline; spire usually immersed, rarely low; lip thickened, smooth, lacking denticulation; external varix absent; siphonal notch absent; posterior notch absent; columella multiplicate, with 6-8 plications plus parietal lirae, plications usually excavated inside aperture due to collabral parietal callus ridge.

Species within the genus Crithe include:[2]