Matanawi (''Matanauí, Mitandua, Moutoniway'') was a divergent Amazonian language that appears to be distantly related to the Muran languages. It was originally spoken on the Castanha River and Madeirinha River in Amazonas State.


The only existing word list for Matanawi is that of Curt Nimuendajú (1925).Nimuendajú, Curt. 1925
As Tribus do Alto Madeira
''Journal de la Société des Américanistes'' XVII. 137-172.
Loukotka (1968) lists the following basic vocabulary items for Matanawí. :


Category:Indigenous languages of the Americas Category:Extinct languages Category:Language isolates of South America {{na-lang-stub