Johann David Ludwig Graf Yorck von Wartenburg (September 26, 1759 – October 4, 1830) is a Prussian Generalfeldmarschall instrumental in the switching of the Kingdom of Prussia from a French alliance to a Russian alliance during the War of the Sixth Coalition

Ludwig van Beethoven's "Yorckscher Marsch" is named in his honor.

The Field Marshal's surname is Yorck; Wartenburg is a battle-honor appended to the surname as a title of distinction (cf. Britain's Montgomery of Alamein).