Tomichia is a genus of very small freshwater snails which have a gill and an operculum, gastropod molluscs or micromolluscs in the family Tomichiidae.

[3] The distribution of the genus Tomichia includes South Africa[2] and Eastern Zaire.

[4] Tomichia is the only genus of Pomatiopsidae in Africa.

[4] This genus occurs is both freshwater and brackish water.

Kameda & Kato (2011)[2] recognized 11 species of Tomichia.