Iguig, officially the Municipality of Iguig (; ; ), is a municipality in the province of Cagayan, Philippines. According to the , it has a population of people.
Iguig was officially established as a Spanish mission on 16 April 1608. The name of the town is said to mean "the place of Ig", referring to a native chieftain and warrior who lived in the area.
Iguig is from Tuguegarao and from Manila.
Iguig is politically subdivided into 23 barangays. Each barangay consists of puroks while some have sitios.
In the 2024 census, the population of Iguig was 31,342 people, with a density of .
Iguig is part of the third legislative district of the province of Cagayan. It 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 councilors are elected directly by the people through an election which is being held every three years.
The Schools Division of Cagayan governs the town's public education system. The division office is a field office of the DepEd in Cagayan Valley region. The Iguig Schools District Office governs all public and private elementary and high schools throughout the municipality.