Penescosta mathewsi

{{Short description|Species of gastropod}}

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

{{Speciesbox

| image =

| status = VU | status_system = IUCN2.3

| taxon = Penescosta mathewsi

| authority = Preston, 1913

| synonyms =

|status_ref={{cite iucn |author=Ponder, W.F. |author2=Varman, R. |date=1996 |title=Penescosta mathewsi |volume=1996 |page=e.T16557A6063603 |doi=10.2305/IUCN.UK.1996.RLTS.T16557A6063603.en |access-date=15 November 2021}}

}}

Penescosta mathewsi is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Charopidae. This species is endemic to Norfolk Island.