The Gaddang (an Indigenous Filipino people) are a linguistically identified ethnic group resident in the watershed of the Cagayan River in Northern Luzon, Philippines. Gaddang speakers were recently reported to number as many as 30,000,[2] a number that may not include another 6,000 related Ga'dang speakers or other small linguistic-groups whose vocabularies are more than 75% identical.
SOURCE: Bandioan Hernando Jhonethan
Gaddang comes from the word ga meaning "heat" and dang meaning "burned"; this likely alludes to the fact that the Gaddang are generally darker of skin than other Cordillera peoples. Many Gaddang live in the highlands of southeastern Kalinga-Apayao and eastern Bontok and Isabela provinces.