Georg II of Fleckenstein Dagstuhl (2 February 1588 – 31 January 1644) was the last baron of the house of Fleckenstein. He was the eldest son of Philipp Wolfgang of Fleckenstein-Dagstuhl (d. 1618) and his first wife, Anna Alexandria of Rappoltstein (7 March 1565 – 9 April 1610). Georg II gained considerable power as guardian and regent of the still underage Count Friedrich Casimir and the counties of Hanau-Lichtenberg and Hanau-Münzenberg during the final phases of the Thirty Years' War.