Prince Frederick Henry Eugen of Anhalt-Dessau

Frederick Henry Eugen of Anhalt-Dessau (27 December 1705 in Dessau – 2 March 1781 in Dessau), was a German prince of the House of Ascania from the Anhalt-Dessau branch.

He was the fourth son of Leopold I, Prince of Anhalt-Dessau, by his morganatic wife Anna Louise Föhse.

In 1743 he left the Prussian service and joined the Austrian army under the command of Prince Charles Alexander of Lorraine as a volunteer on the Rhine.

In 1746 he joined the army of the Electorate of Saxony, where he became a Governor of Wittenberg and later Generalfeldmarschall.

He never married or had children and never took part in the government of Anhalt-Dessau.