Isinai language

Isinai
Isinay
Native to	Philippines
Region	Luzon
Native speakers	(5,500 cited 1990 census)
Language family	Austronesian Malayo-Polynesian Philippine Northern Luzon South–Central Cordilleran Central Cordilleran Nuclear Cordilleran Bontok–Balangao Isinai
Language codes
ISO 639-3
Glottolog	isin1239
Area where Isinai is spoken

Isinai (also spelled Isinay) is a Northern Luzon language primarily spoken in Nueva Vizcaya province in the northern Philippines. By linguistic classification, it is more divergent from other South-Central Cordilleran languages, such as Kalinga, Itneg or Ifugao and Kankanaey.

According to the Ethnologue, Isinai is spoken in Bambang, Dupax del Sur, and Aritao municipalities, alongside Ilocano.

Isinai contains a definite article with three different forms that vary depending on the relation of the noun. The forms of the definite article are: ar, ardari, and war.