Parhedylidae are a taxonomic family of sea slugs, marine gastropod mollusks in the superfamily Parhedyloidea.

[4] Microhedylidae has been listed as a synonym of Parhedylidae in the taxonomy of Bouchet & Rocroi (2005).

[3] Ganitidae Rankin, 1979 has been listed as a sole family within Hedylopsoidea.

[3] Sensu Schrödl & Neusser (2010)[5] is Microhedylidae within the clade Microhedylacea.

[5] Genera within the Parhedylidae include: A cladogram based on sequences of mitochondrial 28S ribosomal RNA, 16S ribosomal RNA and cytochrome-c oxidase I (COI) genes showing phylogenic relations within the family Microhedylidae:[6] Microhedyle sp.