The Duna–Pogaya (Duna–Bogaia) languages are a proposed small family of Trans–New Guinea languages in the classification of Voorhoeve (1975), Ross (2005) and Usher (2018), consisting of two languages, Duna and Bogaya, which in turn form a branch of the larger Trans–New Guinea family.

[2] Duna has had significant influence on Bogaya due to the socioeconomic dominance of Duna speakers over the less populous, less influential Bogaya speakers.

[3] Duna also has much more influence from Huli (a widely spoken Trans-New Guinea language) at 27–32 percent lexical similarity with Huli, while Duna has only 5-10 percent.

[7] The words cited constitute translation equivalents, whether they are cognate (e.g. ɔwa, hewa for “sun”) or not (e.g. fando, tete for “louse”).

Duna reflexes of proto-Trans-New Guinea (pTNG) etyma are:[3]