Cabanatuan, officially the City of Cabanatuan (Filipino: Lungsod ng Cabanatuan; Ilocano: Siudad ti Cabanatuan; Kapampangan: Lakanbalen/Ciudad ning Cabanatuan), is a 1st class component city in the province of Nueva Ecija, Philippines. According to the 2020 census, it has a population of 327,325 people, making it the most populous city in Nueva Ecija and the fifth-most populous in Central Luzon.