Maasin is a fourth class municipality in the province of Iloilo, Philippines. According to the 2010 census, it has a population of 35,069 people.

Barangays
Maasin is politically subdivided into 50 barangays.

  • Abay
  • Abilay
  • Agrocel Pob.
  • Amerang
  • Bagacay East
  • Bagacay West
  • Bug-ot
  • Bolo
  • Bulay
  • Buntalan
  • Burak
  • Cabangcalan
  • Cabatac
  • Caigon
  • Cananghan
  • Canawili
  • Dagami
  • Daja
  • Dalusan
  • DELCAR Pob. (Delgado-Cartagena)
  • Inabasan
  • Layog
  • Liñagan Calsada
  • Liñagan Tacas
  • Linab
  • MARI Pob. (Mabini-Rizal)
  • Magsaysay
  • Mandog
  • Miapa
  • Nagba
  • Nasaka
  • Naslo-Bucao
  • Nasuli
  • Panalian
  • Piandaan East
  • Piandaan West
  • Pispis
  • Punong
  • Sinubsuban
  • Siwalo
  • Santa Rita
  • Subog
  • THTP Pob. (Taft-Thompson–Hughes-del Pilar)
  • Tigbauan
  • Trangka
  • Tubang
  • Tulahong
  • Tuy-an East
  • Tuy-an West
  • Ubian