Naguilian, officially the Municipality of Naguilian (; ), is a municipality in the province of Isabela, Philippines. According to the , it has a population of people.
Naguilian was formerly a part of the town of Gamu before it was made a separate town by virtue of a Spanish Royal decree dated November 27, 1896.
Naguilian is situated from the provincial capital Ilagan, and from the country's capital city of Manila.
Naguilian is politically subdivided into 25 barangays. Each barangay consists of puroks while some have sitios.
In the 2024 census, the population of Naguilian was 34,520 people, with a density of .
As a municipality in the province of Isabela, government officials at the provincial and municipal levels are voted by the town. The provincial government has political jurisdiction over most local transactions of the municipal government.
The Municipality of Naguilian is governed by a mayor, designated as its Local Chief Executive, and by a municipal council as its legislative body in accordance with the Local Government Code. The mayor, vice mayor, and the municipal councilors are elected directly in elections held every three years.
Barangays are also headed by elected officials: Barangay Captain, Barangay Council, whose members are called Barangay Councilors. The barangays have SK federation which represents the barangay, headed by SK chairperson and whose members are called SK councilors. All officials are also elected every three years.
<big>List of former Municipal Mayors (1895âÂÂpresent)</big>
Naguilian, belonging to the second legislative district of the province of Isabela, currently represented by Hon. Ed Christopher S. Go.
The Schools Division of Isabela governs the town's public education system. The division office is a field office of the DepEd in Cagayan Valley region. The Naguilian Schools District Office governs the public and private elementary and public and private high schools throughout the municipality.