Duke Ferdinand Frederick Augustus of Württemberg (22 October 1763 – 20 January 1834) was the fifth son of Frederick II Eugene, Duke of Württemberg and a Habsburg Austrian general during the French Revolutionary Wars and Napoleonic Wars. As a high-ranking nobleman, he started his military career as an Oberstleutnant in 1781. Promoted to General-major in 1788, he fought at Belgrade during the Austro-Turkish War. During the War of the First Coalition he led his troops at Neerwinden and was in command of the successful Siege of Condé in 1793.