Heinrich XXIV, Prince Reuss of Greiz

Heinrich XXIV was born at Greiz, Principality of Reuss-Greiz, only son of Heinrich XXII, Prince Reuss of Greiz (1846–1902), (son of Heinrich XX, Prince Reuss of Greiz and Princess Caroline of Hesse-Homburg) and his wife, Princess Ida of Schaumburg-Lippe (1852–1891), (daughter of Adolf I, Prince of Schaumburg-Lippe and Princess Hermine of Waldeck-Pyrmont).

At the death of father on 19 April 1902, Heinrich XXIV succeeded as the Prince Reuss of Greiz.

Because of the physical and mental disability of Heinrich XXIV, the result of an accident in his childhood, Heinrich XIV, Prince Reuss Younger Line served as regent of Reuss Elder Line from 1902 until his death in 1913; the regency continued thereafter under Heinrich XIV's successor, Heinrich XXVII, until the abolition of the German monarchies in 1918.

At his death in 1927, the House Reuss of Greiz became extinct, Heinrich XXIV died unmarried and with no issue, the titles passed to Heinrich XXVII of Reuss Younger Line.

• 20 March 1878 – 19 April 1902: His Serene Highness Prince Heinrich XXIV Reuss of Greiz
• 19 April 1902 – 13 October 1927: His Serene Highness The Prince Reuss of Greiz

• The Royal House of Stuart, London, 1969, 1971, 1976, Addington, A. C., Reference: II 331
• Gehrlein Thomas, The House of Reuss - Older and Younger line Börde Verlag 2006, ISBN 978-3-9810315-3-9