John William III

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John William III
Duke of Saxe-Eisenach
Reign	1698–1729
Predecessor	John George II
Successor	Wilhelm Heinrich
Born	(1666-10-17)17 October 1666 Friedewald
Died	14 January 1729(1729-01-14) (aged 62) Eisenach
Spouse	Amalie of Nassau-Dietz Christine Juliane of Baden-Durlach Magdalene Sibylle of Saxe-Weissenfels Marie Christine Felizitas of Leiningen-Dagsburg-Falkenburg-Heidesheim
Issue	Wilhelm Heinrich Johannette, Duchess of Saxe-Weissenfels Karoline, Landgravine of Hesse-Philippsthal Princess Charlotte Wilhelmine Christiane, Princess of Nassau-Usingen
House	House of Wettin
Father	John George I, Duke of Saxe-Eisenach
Mother	Johannetta of Sayn-Wittgenstein
Religion	Lutheranism

John William III, Duke of Saxe-Eisenach (17 October 1666 – 14 January 1729), was a duke of Saxe-Eisenach, and came from the Ernestine line of the House of Wettin.