Pijao is an unclassified indigenous American language

Indigenous peoples of the Americas

The indigenous peoples of the Americas are the pre-Columbian inhabitants of North and South America, their descendants and other ethnic groups who are identified with those peoples. Indigenous peoples are known in Canada as Aboriginal peoples, and in the United States as Native Americans...

 that was spoken in the Magdalena River

Magdalena River

The Magdalena River is the principal river of Colombia, flowing northward about through the western half of the country. It takes its name from the biblical figure Mary Magdalene. It is navigable through much of its lower reaches, in spite of the shifting sand bars at the mouth of its delta, as...

 Valley in Colombia until the 1950s.

A small vocabulary list was collected in 1943; only 30 Pijao words and expressions are known. The few words which resemble Carib are thought to be loans; toponyms in Pijao country are also Carib. Marshall & Seijas (1973) did not detect significative connections between Pijao and other unclassified languages of the area: Colima, Muzo, Pantágora, and Panche.