Isnag is an Austronesian language spoken by around 50,101 Isnag people of Apayao Province in the Cordillera Administrative Region in the northern Philippines, who are also found in parts of Cagayan and Ilocos Norte. Their populations are distributed across the municipalities of Calanasan, Kabugao, Pudtol, Flora, Luna, Santa Marcela, and Conner in Apayao; the eastern part of Ilocos Norte, specifically Adams, Carasi, Dumalneg, Vintar, Marcos, Dingras, Solsona, Bangui, and Pagudpud; the northwestern part of Cagayan, particularly Santa Praxedes, Claveria, Sanchez Mira, and Pamplona; and the northern part of Abra, particularly Tineg. Around 85% of Isnag are capable of reading the Isnag language. Many Isnag speakers also speak Ilocano.