The Inland Gulf languages are a family of Trans–New Guinea languages in the classifications of Stephen Wurm (1975) and Malcolm Ross (2005).

Although the family as a whole is clearly valid, Ipiko is quite distinct from the other languages.

Karami was once included, due to a large number of loanwords from Minanibai, but is best left unclassified for now.

[2] Usher (2020) reconstructs the consonant inventory as follows:[3] Vowels are *a *e *i *o *u.

The pronouns are:[3] Inland Gulf reflexes of proto-Trans-New Guinea (pTNG) etyma:[2]