Wainumá (Wainambu, Wainambè) and Mariaté are dialects of an extinct, poorly attested, and unclassified Arawakan language.
Kaufman (1994) placed them in his Wainumá branch, but this is not followed in Aikhenvald (1999). It is placed in the Japurá-Colômbia branch by Ramirez and França (2019).
Word lists of Wainumá have been collected by:
A word list of Mariaté was recorded by Spix and Martius in 1820.