Leiostyla cassida

{{Short description|Species of gastropod}}

{{Speciesbox

| image =

| status = CR

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Seddon, M.B. |date=2011 |title=Leiostyla cassida |volume=2011 |page=e.T171004A6798938 |doi=10.2305/IUCN.UK.2011-1.RLTS.T171004A6798938.en |access-date=16 November 2021}}

| taxon = Leiostyla cassida

| authority = (R.T.Lowe, 1831)

| synonyms =

}}

Leiostyla cassida is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusks in the family Lauriidae.

This species is endemic to Portugal. This species is mentioned in Annexes II and IV of the Habitats Directive.

This is one of several species sometimes referred as the Madeiran land snail.