 John IV , ; 19 March 1604 6 November 1656, ainzi John the Restorer , aiva Mambo wePortugal uyo akatonga kubva muna 1640 kusvika paakafa, akatanga kudzorerwa kwePortugalrusununguko kubva muhurumende yeSpain yeHabsburg. Kubata kwake chigaro kwakatsigira imba yeBraganza pachigaro cheumambo chePortugal, uye kwakaratidza kuguma kweIberian Union yemakore makumi matanhatu, umo Portugal neSpain vakagovana mambo mumwe chete. 