The Mongol–Langam languages are a language family of East Sepik Province, Papua New Guinea

Papua New Guinea

Papua New Guinea , officially the Independent State of Papua New Guinea, is a country in Oceania, occupying the eastern half of the island of New Guinea and numerous offshore islands...

. According to Summer Institute of Linguistics data from 2003, the member languages had the following number of speakers:

• Mongol, 340 speakers
• Langam, 410 speakers
• Yaul, 1,210 speakers

Their classification is somewhat unclear. Donald Laycock

Donald Laycock

Dr Donald Laycock was an Australian linguist and anthropologist. He is best remembered for his work on the languages of Papua New Guinea.-Biography:...

 (1973) noted that the Mongol–Langam languages mark nouns for plural

Plural

In linguistics, plurality or [a] plural is a concept of quantity representing a value of more-than-one. Typically applied to nouns, a plural word or marker is used to distinguish a value other than the default quantity of a noun, which is typically one...

isation, like the Lower Sepik languages

Lower Sepik languages

The Lower Sepik or Nor–Pondo languages are a small language family of 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...

 (Nor–Pondo languages) and Yuat languages

Yuat languages

The Yuat languages are an independent family of six Papuan languages in the classification of Malcolm Ross that had been part of Stephen Wurm's Sepik–Ramu proposal. However, there is no lexical or morphological evidence that the families are related....

, and also that the lexicon also shows many resemblances to Yuat languages, while pronouns are similar to the Grass languages. Malcolm Ross

Malcolm Ross

Malcolm David Ross is a linguist and professor at the Australian National University. He has published work on Austronesian and Papuan languages, historical linguistics, and language contact.-External links:**...

 (2005) accepts them as Ramu languages

Ramu languages

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 classifies them as one branch of a Ramu – Lower Sepik language...

. However Ethnologue (2009) puts them as an independent family.