Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.

The system is in some parts preliminary, as the authors relied on unpublished (as of 2023) phylogenomic study, which did not include all New World taxa.

They classified Epiphragmophoridae, Helminthoglyptidae, Humboldtianidae, Monadeniidae and Xanthonychidae (provisionally also Lysinoidae and Echinichidae) as subfamilies of the last taxon, because there are no deep splits between them in the cited unpublished study (see also Koene & Schulenburg 2005[5]).

[1] Razkin et al. (2015)[6] reorganized classification into monophyletic taxa according to the molecular phylogeny.

The classification proposed for Western Palaearctic Helicoidea is as follows: Thompson & Naranjo-García (2012) described a new family Echinichidae and placed it to the superfamily Xanthonychoidea.