Pankararú (Pancaré, Pankaré, Pancaru, Pankaruru, Pankarará, Pankaravu, Pankaroru, Pankarú, Brancararu) is an extinct language, probably a language isolate, of eastern Brazil. There are 6,000 ethnic Pankararú, but they all speak Portuguese. In 1961, only two elders could remember anything of the language. Today, they live in Brejo dos Padres and other villages of Tacaratu, Pernambuco State. The language was originally spoken between the Moxotó River and the Pajeú River.

In the 19th century the people split into two ethnic groups, the Pankararú and the Pankararé. One quarter of the Pankararé retain their traditional religion. Their language, however, is unattested, and can only be assumed to be a dialect of Pankararu.

Pankararú has no proven relatives and remains unclassified. There are similarities with Tukano and Tupian.^{[citation needed]} Meader (1978) found that of 80 known lexical items, one third (26) are clearly cognate with Tupian languages. He speculates that the last speakers of Pankararú may therefore have been bilingual in Tupi. The identity of the rest of the vocabulary has not been identified, and Pankararú may be a language isolate.

The Atikum language was spoken nearby, but it is a language isolate or is unclassified and is not related to Pankararú.

Loukotka (1968) also lists these languages as being formerly spoken in Tacaratu, Pernambuco State. It is not known whether or not they were related to Pankararú:

The original languages of the Koiupanká and Karuazu may have been related or identical to Pankararú.

Kalankó (Cacalancó), with descendants now living in Água Branca, Alagoas, may have also been related to, or identical with, Pankararú.

Loukotka (1968) lists the following basic vocabulary items.