Trans–New Guinea (TNG) is an extensive family of Papuan languages spoken in New Guinea and neighboring islands, perhaps the third-largest language family in the world by number of languages. The core of the family is considered to be established, but its boundaries and overall membership are uncertain. The languages are spoken by around 3 million people. There have been three main proposals as to its internal classification.
The Lower Mamberamo languages are a recently proposed language family linking two languages spoken along the northern coast of Papua province, Indonesia, near the mouth of the Mamberamo River. They have various been classified either as heavily Papuanized Austronesian languages belonging to the SHWNG branch, or as Papuan languages that had undergone heavy Austronesian influence. Glottolog 3.4 classifies Lower Mamberamo as Austronesian, while Donohue classifies it as Papuan. Kamholz (2014) classifies Warembori and Yoke each as coordinate primary subgroups of the South Halmahera–West New Guinea languages.
The Mairasi languages, also known as Etna Bay are a small independent family of Papuan languages in the classifications of Malcolm Ross and Timothy Usher, that had been part of Stephen Wurm's Trans–New Guinea proposal. They are named after Etna Bay, located in the southeastern corner of West Papua province, in Indonesia.
The Nimboran languages are a small family of Papuan languages, spoken in the Grime River watershed, that had been part of Stephen Wurm's Trans–New Guinea proposal. However, when proto-Nimboran pronouns are reconstructed (*genam "I" and kom or komot "thou"), they have little resemblance to the proto-TNG pronouns *na and *ga. Usher places them in a North Papuan stock that resembles Cowan's proposal.
The Burmeso language – also known as Taurap – is spoken by some 300 people in Burmeso village along the mid Mamberamo River in Mamberamo Tengah subdistrict, Mamberamo Raya Regency, Papua province, Indonesia. It is surrounded by the Kwerba languages to the north, the Lakes Plain languages to the south, and the East Cenderawasih Bay languages to the west.
The Pauwasi languages are a likely family of Papuan languages, mostly in Indonesia. The subfamilies are at best only distantly related. The best described Pauwasi language is Karkar, across the border in Papua New Guinea. They are spoken around the headwaters of the Pauwasi River in the Indonesian-PNG border region.
The Mek languages are a well established family of Papuan languages spoken by the Mek peoples. They form a branch of the Trans–New Guinea languages (TNG) in the classifications of Stephen Wurm (1975) and of Malcolm Ross (2005).
The South Bird's Head or South Doberai languages are three families of Papuan languages. They form part of the Trans–New Guinea languages in the classifications of Malcolm Ross (2005) and Timothy Usher (2020), though Pawley and Hammarström (2018) do not consider them to be part of Trans–New Guinea.
The Dani or Baliem Valley languages are a family of clearly related Trans–New Guinea languages spoken by the Dani and related peoples in the Baliem Valley in the highlands of Papua Province, Indonesia. Foley (2003) considers their TNG status to be established. They may be most closely related to the languages of Paniai Lakes, but this is not yet clear. Capell (1962) had posited that their closest relatives were the Kwerba languages, which Ross (2005) rejects.
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. Glottolog, which is based largely on Usher, however finds the connections between the two languages to be tenuous, and the connection to TNG unconvincing.
The Gogodala–Suki or Suki – Aramia River languages are a small language family of Papua New Guinea, spoken in the region of the Aramia River. The four language are clearly related.
The Mombum languages, also known as the Komolom or Muli Strait languages, are a pair of Trans–New Guinea languages, Mombum (Komolom) and Koneraw, spoken on Komolom Island just off Yos Sudarso Island, and on the southern coast of Yos Sudarso Island, respectively, on the southern coast of New Guinea. Komolom Island is at the southern end of the Muli Strait.
The Ok languages are a family of about a dozen related Trans–New Guinea languages spoken in a contiguous area of eastern Irian Jaya and western Papua New Guinea. The most numerous language is Ngalum, with some 20,000 speakers; the best known is probably Telefol.
Momuna (Momina), also known as Somahai, is a Papuan language spoken in the highlands of Papua province, Indonesia.
The Finisterre–Huon languages comprise the largest family within the Trans–New Guinea languages (TNG) in the classification of Malcolm Ross. They were part of the original TNG proposal, and William A. Foley considers their TNG identity to be established. The languages share a small closed class of verbs taking pronominal object prefixes some of which are cognate, strong morphological evidence that they are related.
The Demta–Sentani languages form a language family of coastal Indonesian Papua near the Papua New Guinea border.
Morori is a moribund Papuan language of the Kolopom branch of the Trans–New Guinea family. It is separated from the other Kolopom languages by the intrusive Marind family. All speakers use Papuan Malay or Indonesian as L2, and many know Marind.
Dem is a divergent Papuan language of West New Guinea. Although Palmer (2018) leaves it unclassified, it was tentatively included in the Trans–New Guinea family in the classification of Malcolm Ross (2005), and Timothy Usher ties it most closely to Amung.
Mor is a nearly extinct Trans–New Guinea language of Indonesia. It is spoken along the Budidi River and the Bomberai River on the Bomberai Peninsula.
Mairasi is a Papuan language of the Bomberai Peninsula of West Papua, Indonesia.
