Rhinonyssidae is a family of mites in the order Mesostigmata. There are about 16 genera and at least 460 described species in Rhinonyssidae.

The mites of this family are obligate parasites of avian respiratory systems, living in nasal passageways. They are endoparasites, typically living their entire life in within the respiratory systems of birds.

Rhinonyssid mites are widespread, and have been observed on every continent including Antarctica (Rhinonyssus sphenisci, first observed in 1963).

...