Bongabon is a second class municipality in the province of Nueva Ecija, Philippines. According to the 2010 census, it had a population of 59,343 people. It has an area of 28,352.90 hectares, and is the leading producer of onion in the Philippines and in Southeast Asia. Each barangay in Bongabon has its own fiesta. The town fiesta, celebrated annually on the 1st to 2nd week of April, is known as the Sibuyasan Onion Festival.