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. The language area consists of six villages: Moife, Imikori, Irafo, Kagu, Agura 1, and Agura 2. Its ISO 639 code is usa. As of 2009, the language was reported to have had about 1200 speakers and no fluent speakers below the age of 25, which makes it an endangered language.