Yao (Jaoi, Yaoi, Yaio, Anacaioury) is an extinct Cariban language of Trinidad and French Guiana, attested in a single 1640 word list recorded by Joannes de Laet.

It is thought that the Yao people migrated from the Orinoco to the islands perhaps a century earlier, after the Kaliña.

Yao is too poorly attested to classify within Cariban with any confidence, though Terrence Kaufman links it to the extinct Tiverikoto.

[2] A few of the attested words are: nonna' or noene 'moon', weyo 'sun', capou 'céu', chirika 'star', pepeïte 'wind', kenape 'rain', soye 'earth', parona 'sea', ouapoto 'fire', aroua 'jaguar', pero 'dog' (from Spanish).

This article related to the Indigenous languages of the Americas is a stub.