Bayombong is a first class municipality in the province of Nueva Vizcaya, Philippines. It is the capital of Nueva Vizcaya. According to the 2010 census, it has a population of 57,416 people. Bayombong is the seat of the Provincial Capitol of Nueva Vizcaya. The name Bayombong emanated from the Gaddang word “Bayongyong” which means confluence of two or more rivers.