Abau is a Papuan language spoken in southern Sandaun Province of Papua New Guinea, primarily along the border with Indonesia.
Tayap is an endangered Papuan language spoken by fewer than 50 people in Gapun village of Marienberg Rural LLG in East Sepik Province, Papua New Guinea. It is being replaced by the national language and lingua franca Tok Pisin.
The Sepik–Ramu languages are an obsolete language family of New Guinea linking the Sepik, Ramu, Nor–Pondo, Leonhard Schultze (Walio–Papi) and Yuat families, together with the Taiap language isolate, and proposed by Donald Laycock and John Z'graggen in 1975.
The Arapesh languages are several closely related Torricelli languages of the 32,000 Arapesh people of Papua New Guinea. They are spoken in eastern Sandaun Province and northern East Sepik Province, Papua New Guinea.
The Ramu–Lower Sepika.k.a.Lower Sepik–Ramu languages are a proposed family of about 35 Papuan languages spoken in the Ramu and Sepik river basins of northern Papua New Guinea. These languages tend to have simple phonologies, with few consonants or vowels and usually no tones.
The Sepik or Sepik River languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here. They tend to have simple phonologies, with few consonants or vowels and usually no tones.
The Karkar language, also known as Yuri, is the sole Eastern Pauwasi language of Papua New Guinea. There are about a thousand speakers along the Indonesian border spoken in Green River Rural LLG, Sandaun Province.
The Yalë language, also known as Yadë, Nagatman, or Nagatiman, is spoken in northwestern Papua New Guinea. It may be related to the Kwomtari languages, but Palmer (2018) classifies it as a language isolate.
The Ndu languages are the best known family of the Sepik languages of East Sepik Province in northern Papua New Guinea. Ndu is the word for 'man' in the languages that make up this group. The languages were first identified as a related family by Kirschbaum in 1922.
Wogamusin is a Papuan language found in four villages in the Ambunti District of East Sepik Province, Papua New Guinea. It was spoken by about 700 people in 1998.
The Lower Sepik a.k.a. Nor–Pondo languages are a small language family of East Sepik Province in northern Papua New Guinea. They were identified as a family by K Laumann in 1951 under the name Nor–Pondo, and included in Donald Laycock's now-defunct 1973 Sepik–Ramu family.
The Ramu languages are a family of some thirty languages of Northern Papua New Guinea. They were identified as a family by John Z'graggen in 1971 and linked with the Sepik languages by Donald Laycock two years later. Malcolm Ross (2005) classifies them as one branch of a Ramu – Lower Sepik language family. Z'graggen had included the Yuat languages, but that now seems doubtful.
The Upper Sepik languages are a group of ten to a dozen languages generally classified among the Sepik languages of northern Papua New Guinea.
Mehek is a Tama language spoken by about 6300 people in a somewhat mountainous area along the southern base of the Torricelli Mountains in northwestern Papua New Guinea. Mehek is spoken in six villages of Sandaun Province: Nuku, Yiminum, Mansuku, Yifkindu, Wilwil, and Kafle. Mehek is most closely related to Pahi, with 51% lexical similarity, and spoken approximately 20 kilometers to the southwest. Mehek is a fairly typical Papuan language, being verb-final, having a relatively simple phonology, and agglutinative morphology. There is very little published information about Mehek. The literacy rate in Tok Pisin, spoken by nearly everyone, is 50-75%. Mehek is not written, so there is no literacy in Mehek. Tok Pisin is primarily used in the schools, with 50% children attending. There is also a sign language used by the large number of deaf people in the Mehek community.
Ama (Sawiyanu) is a Left May language of Papua New Guinea, in East Sepik Province. Former dialects have merged.
Mundugumora.k.a.Biwat is a Yuat language of Papua New Guinea. It is spoken in Biwat village of Yuat Rural LLG, East Sepik Province.
Namia is a Sepik language spoken in Namea Rural LLG, Sandaun Province, Papua New Guinea. It goes by various names, such as Edawapi, Lujere, Yellow River. Language use is "vigorous" (Ethnologue).
Sepik Iwam, or Yawenian, is a language of Papua New Guinea. It is the lexical basis of the Hauna trade pidgin.
The Leonhard Schultze or Walio–Papi languages are a proposed family of about 6 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea. They are spoken along the border region of East Sepik Province and Sandaun Province, just to the south of the Iwam languages.
The Wogamus languages are a pair of closely related languages, Wogamusin and Chenapian.
