Duke Eugen of Württemberg (German: Herzog Friedrich Eugen Carl Paul Ludwig von Württemberg; 8 January 1788 – 16 September 1857) was a German prince and a General of Infantry in the Imperial Russian Army during the Napoleonic Wars.

Duke Eugen was born at Oels, Lower Silesia, Kingdom of Prussia (now Oleśnica, Poland).

He was the first child of Princess Louise of Stolberg-Gedern (1764 – 1834) and her husband Duke Eugen of Württemberg (1758 – 1822), who was brother of Empress Maria Feodorovna the consort of Paul I of Russia and son of Frederick II Eugene, Duke of Württemberg and Margravine Sophia Dorothea of Brandenburg-Schwedt.

In the battle of Lutzen, Eugen's corps was heavily engaged and suffered many casualties recapturing villages from the French.

In the battle of Bautzen, Eugen's men, acting as the Russian rearguard, slowed the French advance by defending positions on hills and behind a village.

In the battle of Dresden, the heavily outnumbered Eugen held off the forces of the French general Vandamme for a day before retreating.