Hendrik XXIV Reuss van Greiz (Greiz, 20 maart 1878 - aldaar, 13 oktober 1927) was van 1902 tot 1918 vorst van Reuss oudere linie. ###>Heinrich XXIV, Prince Reuss of Greiz (; 20 March 187813 October 1927) was the last reigning Prince Reuss of Greiz from 1902 to 1918.