The Duchy of Saxe-Jena was one of the Ernestine duchies of the House of Wettin.

Duchy of Saxe-Jena
Herzogtum Sachsen-Jena
1672–1690
Saxe-Jena, shown with the other Ernestine duchies
Saxe-Jena, shown with the other Ernestine duchies
StatusState of the Holy Roman Empire
CapitalJena
GovernmentPrincipality
Historical eraMiddle Ages
• Partitioned from
    Saxe-Weimar
 
1672 1672
• Ducal line extinct;
    restored to Saxe-Weimar
 
1690 1690
Preceded by
Succeeded by
Saxe-Weimar Saxe-Weimar
Saxe-Weimar Saxe-Weimar

Part of the Duchy of Saxe-Weimar was given to Bernhard, the fourth son of Wilhelm, Duke of Saxe-Weimar in 1672. The second duke had no male heirs to inherit the title, so the territory was taken back by Saxe-Weimar when the second duke died in 1690. .

Dukes of Saxe-Jena change

Reincorporated into Saxe-Weimar