Nudipleura are a clade of sea snails and sea slugs, marine gastropod mollusks within the large clade Heterobranchia.

In the taxonomy of Bouchet & Rocroi (2005),[2] the clade Nudipleura is arranged as follows: Jörger et al. (2010)[4] have classified Nudipleura within Heterobranchia as a separate clade as follows: Lower Heterobranchia (including Acteonoidea) - Lower Heterobranchia does not form a clade in the study by Jörger et al. (2010):[4] Pleurobranchomorpha Nudibranchia Umbraculoidea Runcinacea Anaspidea Pteropoda Cephalaspidea s.s. Siphonarioidea Sacoglossa Glacidorboidea Amphiboloidea Pyramidelloidea Hygrophila Acochlidiacea Stylommatophora Systellommatophora Ellobioidea Otinoidea Trimusculoidea