Duke Eugen of Württemberg (German: Herzog Eugen Friedrich Heinrich von Württemberg; 21 November 1758 – 20 June 1822) was a German prince. He was the brother of Frederick I of Württemberg.
Eugen was educated by Johann Georg Schlosser, a brother of Johann Wolfgang von Goethe. The prince entered the Army of the Kingdom of Prussia. His regiment the Oleśnica Silesian Hussars being stationed, at that time, near the residence of Eugen's relatives, part of the Duchy of Oels. Whose last Duke Charles Christian Erdmann, left Eugen, in his will, and by fee-tail, the estate of Pokój, Carlsruhe Palace.
Carlsruhe became the permanent residence of Duke Eugen, which he endowed with a theater and chapel. The Duke was a great patron of the composer Carl Maria von Weber, who became his secretary and in September 1806 he was designated as Kapellmeister at Carlsruhe. Eugen's son, distinguished himself in the War of the Sixth Coalition which led to the theater being closed, and Carl Maria von Weber dismissed. In 1820 Eugen built the Cavalier Homes on the Schlossplatz in Carlsruhe.
From 1820 until his death Eugen was a member of the First Chamber of the Estates of Württemberg though he never appeared in person to the meetings, being represented by Count Charles of Reischach.