| Ferdinand IV | |
|---|---|
 Portrait by Frans Luycx, c. 1647-68 | |
| King of the Romans | |
| Reign | 31 May 1653 - 9 July 1654 |
| Predecessor | Ferdinand III |
| Successor | Ferdinand III |
| Co-ruler | Ferdinand III |
| King of Hungary and Croatia | |
| Reign | 16 June 1647 - 9 July 1654 |
| Predecessor | Ferdinand III |
| Successor | Ferdinand III |
| Co-ruler | Ferdinand III |
| Born | 8 September 1633 Vienna, Archduchy of Austria, Holy Roman Empire |
| Died | 9 July 1654 (aged 20) Vienna, Archduchy of Austria, Holy Roman Empire |
| House | Habsburg |
| Father | Ferdinand III, Holy Roman Emperor |
| Mother | Maria Anna of Spain |
| Religion | Roman Catholicism |
Ferdinand IV (8 September 1633 – 9 July 1654) was made and crowned King of Bohemia in 1646, King of Hungary and Croatia in 1647, and King of the Romans on 31 May 1653. He also served as Duke of Cieszyn.