Apiaká is a recently extinct Tupi language of the Apiacá people of the upper Rio Tapajos area of Mato Grosso, Brazil.

[2] After coming into contact with the Neo-Brazilians, the Apiaca language changed with combined elements of the Lingua Geral, A Tupi-based trade jargon.

Although the Munduruku and Kaiabi languages and idioms are spoken on a day-to-day basis in the Apiaca villages, they are, however, limited to domestic spaces and informal conversations.

This allows Portuguese to function as an instrument of resistance employed by the Apiaca to prevent their cultural absorption by the Munduruku and Kaiabi tribes.

[4] The last fluent heritage speaker of Apiaká, Pedrinho Kamassuri, died in hospital in Juara, Mato Grosso, on April 10, 2011.