Kolathiri or Kolathiri Raja (King of Kolathunadu) was the title by which the senior most male along the matrilinieal line of the Mushika or Kolathunadu Royal Family (Kolaswarupam) was styled. had its seat at Ezhimala in Kerala, India and was one of the major political houses which became prominent in Kerala after the disappearance of the Kulasekharas or Perumal rulers of Mahodayapuram by the twelfth century AD.