Petasina unidentata

{{Short description|Species of gastropod}}

{{Cleanup taxon|date=Jan 2019|concern=unaccepted}}

{{Use dmy dates|date=June 2020}}

{{Speciesbox

| image = Petasina unidentata.jpg

| image_caption = A live individual of Petasina unidentata from Bayern

| genus = Petasina

| species = unidentata

| authority = (Draparnaud, 1805)Draparnaud J.-P.-R. 1805. Histoire naturelle des mollusques terrestres et fluviatiles de la France. Ouvrage posthume. Avec XIII planches. pp. [1–9], j-viij [= 1–8], 1–134, [Pl. 1–13]. Paris, Montpellier. (Plassan, Renaud).

| synonyms =

Helix unidentata Draparnaud, 1805

}}

Petasina unidentata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Hygromiidae, the hairy snails and their allies.