Joana of Portugal (Portuguese pronunciation: [?u'?n?]; English: Joan; 31 March 1439 – June 13, 1475) was Queen consort of Castile as the second wife of King Henry IV of Castile and a Portuguese infanta, the posthumous daughter of King Edward of Portugal and his wife Eleanor of Aragon.
She was born in the Quinta do Monte Olivete Villa, Almada six months after the death of her father.