The municipality of Sindangan, is a first-class municipality in the 2nd district of Zamboanga del Norte province in the region of Zamboanga Peninsula, Philippines. It is the fastest-growing municipality in the province and the second-most populous after the provincial capital, Dipolog City, ranked third as the most populous town in the Zamboanga Peninsula. Due to the rapid demographic and economic growth, there are plans to change the status of Sindangan from a municipality to a city. It consists of 52 barangays with the following names: Bago, Balok, Bantayan, Bato, Benigno Aquino Jr., Binuang an, Bitoon, Bucana,
Calatunan, Caluan, Calubian, Dagohoy, Dapaon, Datagan, Datu, Tangkilan, Dicoyong,
Disud, Don Ricardo G Macias (Dinokot), Doña Josefa, Dumalogdog, Fatima, Gampis, Goleo, Imelda, Inuman, Joaquin Macias, La Concepcion, La Roche, San Miguel, Labakid, Lagag, Lapero, Lawis, Mandih, Mars, Mawal, Misok, Motibot, Nato, Nipaan, Pangalalan, Piao, Poblacion, Pres. Ramon Magsaysay, Santo Niño, Santo Rosario, Siari John H. Roemer, Talinga, Tigbao, Tina plan, Titik, Upper Inuman, Upper Nipaan, Mandi, Poblacion and Barangay Siari.