Arionoidea

{{Short description|Superfamily of gastropods}}

{{Automatic Taxobox

| taxon = Arionoidea

| image = Arion vulgaris 3.jpg

| image_caption = A live individual of the Spanish slug Arion vulgaris, in the Arionidae

| authority = J.E. Gray, 1840{{cite book |last1=Gray |first1=J.E. |title=Synopsis of the contents of the British Museum |date=1840 |publisher=British Museum |location=London |page=148 |edition=42 |chapter=[Shells of molluscous animals] |url=https://www.biodiversitylibrary.org/page/55287823}}

}}

Arionoidea is a taxonomic group, superfamily of air-breathing land slugs, shell-less terrestrial pulmonate gastropod mollusks.