Prince Ferdinand Georg August of Saxe-Coburg and Gotha (28 March 1785 – 27 August 1851) was a prince of the House of Saxe-Coburg and Gotha and a general of cavalry in the Austrian Imperial and Royal Army during the Napoleonic Wars. Despite remaining a Lutheran, by marriage he established the Catholic branch of the family which eventually gained the thrones of Portugal (1837) and Bulgaria (1887).

Ferdinand was born at Coburg as Prince Ferdinand of Saxe-Coburg-Saalfeld, the second son of Francis, Duke of Saxe-Coburg-Saalfeld and of his wife, Countess Augusta Reuss-Ebersdorf. In 1826 his title changed from Prince of Saxe-Coburg-Saalfeld to Prince of Saxe-Coburg and Gotha when his brother Duke Ernst I made a territorial exchange with other members of the family.

Ferdinand's nephews and nieces included Queen Victoria of the United Kingdom and her husband Prince Albert, as well as Empress Carlota of Mexico, and her brother King Leopold II of Belgium.

On 10 December 1791 Ferdinand was commissioned as Unterleutnant in the Dragoon-Regiment Coburg Nr. 6. He was promoted to Oberleutnant on 1 March 1796 and to Second-Rittmeister on 18 November 1798. On 1 February 1802 he transferred to the Austrian Army serving in the Chevauxleger-Regiment Fürst Rosenberg in which he was promoted to Major on 29 September 1804. On 1 January 1805 he transferred to the Husaren-Regiment Graf Blankenstein Nr. 6 in which he was promoted to Oberstleutnant on 6 August 1805.

On 15 September 1808 Ferdinand became Oberst in the Husaren-Regiment Erzherzog Ferdinand d'Este Nr. 3. It was in this regiment that he served in the War of the Fifth Coalition under Field Marshal Prince Hohenzollern. He received the knight's cross of the Military Order of Maria Theresa. Before the Battle of Wagram he was named General of the Kavallerie Fürst Liechtenstein. On 15 April 1811 he was named Generalmajor.

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