| Christian IV | |
| Count Palatine of Zweibrücken-Birkenfield | |
| Birth Date: | 6 September 1722 |
| Birth Place: | Bischweiler |
| Death Place: | Herschweiler-Pettersheim |
| House: | Palatinate-Zweibrücken-Birkenfeld |
| Spouse: | Maria Johanna Camasse |
| Issue: | Wilhelm von Zweibrücken, Count of Forbach Maria Anna Caroline von Zweibrücken Karl Ludwig, Baron of Zweibrücken Elisabeth von Zweibrücken Julius, Baron of Zweibrücken |
| Father: | Christian III, Count Palatine of Zweibrücken |
| Mother: | Caroline of Nassau-Saarbrücken |
Christian IV, Count Palatine of Zweibrücken-Birkenfeld (6 September 1722 in Bischweiler - 5 November 1775 in Herschweiler-Pettersheim) was Duke of Zweibrücken from 1735 to 1775.
Christian IV was born in Bischweiler on 6 September 1722, the son of Christian III, Count Palatine of Zweibrücken and his wife, Caroline of Nassau-Saarbrücken.
He constructed Schloss Jägersburg, one of the first examples of a neoclassical palace in Germany.
In 1751 he married, morganatically, Maria Johanna Camasse (1734–1807, created Countess of Forbach in 1757). They had six children, who were unable to succeed to their father's Duchy due to the morganatic nature of their parents' marriage at first, but in 1792 were allowed to carry the name Freiherr von Zweibrücken:[1]
His grandson Christian Freiherr von Zweibrücken (1782–1859, son of Philipp Guillaume) was a Royal Bavarian General der Kavallerie and Generalkapitän of the Hartschiere.