Duchy of Saxe-Eisenach Herzogtum Sachsen-Eisenach
1596 – 1638 1640 – 1644 1672 – 1809
Saxe-Eisenach, shown amongst the other 18th-century Ernestine duchies
Status	State of the Holy Roman Empire State of the Confederation of the Rhine
Capital	Eisenach
Government	Principality
Historical era	Middle Ages
• Division of Erfurt	1572
•	1596 1596
• Partitioned into Altenburg     and Weimar	1638
• Partitioned from Weimar	1640
• Partitioned into Gotha and     Weimar	1644
• Partitioned from Weimar	1662
•	1741 1809
• Merged to form     Saxe-Weimar-Eisenach	1809
Preceded by Succeeded by Saxe-Coburg-Eisenach Saxe-Gotha Saxe-Weimar Saxe-Altenburg Saxe-Gotha Saxe-Weimar Saxe-Weimar-Eisenach

Saxe-Eisenach (German: Sachsen-Eisenach) was the name of three different Ernestine duchies that existed at different times in Thuringia. The chief town and capital of all three duchies was Eisenach.