| John Christian | |
| Duke of Schleswig-Holstein-Sonderburg | |
| Noble Family: | Schleswig-Holstein-Sonderburg |
| Father: | Alexander, Duke of Schleswig-Holstein-Sonderburg |
| Mother: | Dorothea of Schwarzburg-Sondershausen |
| Spouse: | Anna of Oldenburg-Delmenhorst |
| Birth Date: | 26 April 1607 |
| Birth Place: | Löhne |
| Death Place: | Sønderborg |
John Christian, Duke of Schleswig-Holstein-Sonderburg (Danish: Hans Christian af Slesvig-Holsten-Sønderborg, 26 April 1607 — 30 June 1653) was Duke of Schleswig-Holstein-Sonderburg from 1627 to his death in 1653.
John Christian was the eldest son of Alexander, Duke of Schleswig-Holstein-Sonderburg and Dorothea, daughter of John Günther I, Count of Schwarzburg-Sondershausen. His father had appointed him to be his successor. However, after his father died, his mother took over the administration of the duchy, and John Christian was forced to pay annual compensation for his brothers. This drew the duchy into deep debt. He died in Sønderborg in 1653, and was succeeded by his son Christian Adolf I.[1]
John Christian married Anna of Oldenburg and Delmenhorst on 4 November 1634. They had the following children: