Usarufa is a Kainantu language spoken by the people of the same name in Papua New Guinea.

It belongs to the Gauwa branch of the Kainantu family of the Kainantu–Goroka languages.

This section is derived from the analyses presented in Bee 1965 in which an inventory of eighteen consonants is favoured.

In stress-medial position all consonant phonemes can occur, and /p k/ are realised as [β] and [ɣ], respectively.

An alternative analysis treats all glottalised and geminate consonants as secondary, in which case there are only nine consonant phonemes: Usarufa has an unremarkable five-vowel system.