Baron Ernst Gideon von Laudon (German: Ernst Gideon Freiherr von Laudon (originally Laudohn or Loudon) (February 2, 1717 – July 14, 1790) was an Austrian generalisimo, one of the most successful opponents of the Prussian king Frederick the Great, allegedly lauded by Alexander Suvorov as his teacher. He served the position of military governorship of the Kingdom of Serbia from his capture of Belgrade in 1789 until his death, cooperating with the resistance fighters of Koča Anđelković.