The Koiari language is a member of the Austronesian language family, primarily spoken in Papua New Guinea. It is used by the Koiari people, who inhabit the Central Province of the country. The language has several dialects, reflecting the diverse communities within the region. Koiari is notable for its unique phonetic and grammatical features, which distinguish it from other languages in the area. Efforts are being made to document and preserve the language, as it plays a crucial role in the cultural identity of the Koiari people.