Prestonella is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Bothriembryontidae.

[5] Prestonellidae (as a not available name) was tentatively placed as a synonym of Aillyidae in the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.

[citation needed] Herbert (2007)[3] has classified Prestonella in Bulimulidae sensu lato within Orthalicoidea.

[3] Herbert & Mitchell (2009)[7] have classified Prestonella, for which the phylogenetic relationships were previously unknown, in the superfamily Orthalicoidea.

[3] Prestonella has a relict distribution in the south of the southern Africa[10] and it is the only Recent African member of Bulimulidae s.l.