Prince Ernst Heinrich Ferdinand Franz Joseph Otto Maria Melchiades of Saxony, Duke of Saxony (9 December 1896 – 14 June 1971) was a member of the Saxon Royal Family.
Ernst Heinrich was the youngest son of the last Saxon monarch Frederick Augustus III and his wife Archduchess Luise of Austria, Princess of Tuscany.
From 1923 through 1945, Ernst Heinrich was Administrative Chief of the association „House of Wettin – Albertinische Linie e.V.“.