Bayono–Awbono is a recently discovered Papuan language cluster spoken in Papua Province, Indonesia, to the south of the Somahai languages. All that is known of them is a few hundred words recorded in first-contact situations recorded in Wilbrink (2004) and Hischier (2006).
Noting insufficient evidence, Pawley and Hammarström (2018) leave Bayono–Awbono as unclassified rather than as part of Trans-New Guinea. Timothy Usher finds enough evidence to classify Awbono–Bayono within the Greater Awyu (Digul River) family.
Wilbrink (2004) notes limited similarity with the neighboring Ok languages, and does not classify Bayono–Awbono with Ok.
The pronouns demonstrate resemblances to the neighboring Ok and Greater Awyu languages, and the pronouns are consistent with Bayono-Awbono belonging to the Trans–New Guinea family:
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Bayono–Awbono". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
^ abWilbrink, Ans (2004). The Kopkaka of Papua: Provisional notes on their language, its language affiliation and on the Kopkaka culture. MA thesis, Vrije Universiteit Amsterdam.
^Pawley, Andrew; Hammarström, Harald (2018). "The Trans New Guinea family". In Palmer, Bill (ed.). The Languages and Linguistics of the New Guinea Area: A Comprehensive Guide. The World of Linguistics. 4. Berlin: De Gruyter Mouton. pp. 21–196. ISBN978-3-11-028642-7.