The Nyulnyulan languages are a small family of closely related Australian Aboriginal languages spoken in northern Western Australia.

Most languages in this family are extinct, with only three extant languages, all of which are almost extinct.

The languages form two branches established on the basis of lexical and morphological innovation.

[1] Capell (1940) lists the following basic vocabulary items for the Nyulnyulan languages:[2] Some lexical isoglosses between Proto-Western Nyulnyulan and Proto-Eastern Nyulnyulan:[3] The following reconstruction of Proto-Nyulnyulan is from Stokes and McGregor (2003):[3] The following reconstruction of Proto-Western Nyulnyulan is from Stokes and McGregor (2003):[3] The following reconstruction of Proto-Eastern Nyulnyulan is from Stokes and McGregor (2003):[3]