Helenodiscus vernoni

{{Short description|Species of gastropod}}

{{Use dmy dates|date=May 2017}}

{{Speciesbox

| image =

| status = EX

| status_system = IUCN2.3

| status_ref = {{cite iucn |author=Mollusc Specialist Group |date=1996 |title=Helenodiscus vernoni |volume=1996 |page=e.T9771A13014985 |doi=10.2305/IUCN.UK.1996.RLTS.T9771A13014985.en |access-date=17 November 2021}}

| genus = Helenodiscus

| species = vernoni

| authority = (E. A. Smith, 1892)

| synonyms =

}}

Helenodiscus vernoni was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.

This species was endemic to Saint Helena. It is now extinct.