title: Ferdinand IV
text: # Ferdinand IV
  
  Ferdinand IV is the name of:
  
  * Ferdinand IV of Castile (1285–1312), king of Castile and León from 1295
  * Ferdinand IV of Germany (1633–1654, king of the Romans from 1653, of Bohemia from 1646, of Hungary from 1647)
  * Ferdinand IV of Naples (1751–1825, king 1759–1799; 1799–1806; 1815–1816) (Ferdinand III of Sicily 1759–1816)
  * Ferdinand IV of Tuscany (1835–1908, grand-duke 1859–1860)
  