Saxe-Eisenach was an Ernestine duchy ruled by the Saxon House of Wettin. The State intermittently existed at three different times in the Thuringian region of the Holy Roman Empire. The chief town and capital of all three duchies was Eisenach.

Saxe-Eisenach was an Ernestine duchy ruled by the Saxon House of Wettin. The State intermittently existed at three different times in the Thuringian region of the Holy Roman Empire. The chief town and capital of all three duchies was Eisenach.