Johann Ernst, Count of Hanau-Münzenberg

Johann Ernst of Hanau-Münzenberg-Schwarzenfels (13 June 1613 in Schwarzenfels – 12 January 1642 in Hanau), was the last Count of the Hanau-Münzenberg line. He succeeded his grand-nephew Philipp Ludwig III in 1641. When Johann Ernst died in 1642, Hanau-Münzenberg fell to the Hanau-Lichtenberg line.