History of Apayao

Kalinga-Apayao () was a province of the Philippines in the Cordillera Administrative Region in the island of Luzon. It was formed, along with Benguet, Ifugao, and the new Mountain Province, from the earlier Mountain Province, with the passage of Republic Act No. 4695 in 1966. The said law was amended by RA No. 7878 in 1995, which partitioned the province into modern Kalinga and Apayao.