Cuyonon is a language spoken on the coast of Palawan, and the Cuyo Islands in the Philippines. Cuyonon had been the lingua franca (language used for communication) of the province of Palawan until recently when migration flow from Southern Tagalog region rapidly increased. 43% of the total population of Palawan during the late ‘80s spoke and used Cuyonon as a language. But later studies show a significant decrease in the number of Cuyonon speakers brought by the increase of usage of Tagalog among Palawan residents who hailed from Luzon. The Cuyonon language is classified by the Summer Institute of Linguistics as belonging to the Central Philippine, Western Visayan, Cuyan subgroup. The biggest number of speakers lives in the Cuyo Group of Islands, which is located between Northern Palawan and Panay Island.