The Gaddang language is an Austronesian language spoken primarily by the Gaddang people in the Philippines, particularly in the provinces of Isabela and Nueva Vizcaya. It is part of the Northern Luzon languages and is closely related to other languages in the region, such as Ibanag and Ilocano. Gaddang is characterized by its unique phonetic and grammatical features, which distinguish it from neighboring languages. Efforts are being made to preserve and promote the language, as it is an essential part of the cultural identity of the Gaddang community.