Gevherhan Sultan (Ottoman Turkish: کوھرخان سلطان; "Gem of the Khan"; c. 1642 – 27 October 1694) was an Ottoman princess, daughter of Sultan Ibrahim (r. 1640 – 1648) and half-sister of Sultans Mehmed IV (r. 1648 – 1687), Suleiman II (r. 1687 – 1691) and Ahmed II (r. 1691 – 1695) of the Ottoman Empire.