Abd al-Hamid I (
äb'däl-hämēd') or
Abdülhamit (
Turk. äbdül'hämēd'), 1725-89, Ottoman sultan (1774-89), brother and successor of
Mustafa III. His reign, one of decline for the Ottoman Empire (Turkey), saw the end of the war of 1768-74 and the beginning of the war of 1787-91 with Catherine II of Russia (see
Russo-Turkish Wars). The peace terms in 1774 (see
Kuchuk Kainarji, Treaty of) established Russia as the foremost power in the Middle East and had incalculable effects. In 1775, Austria, jealous of Russian expansion, forced the Turks to cede
Bukovina. Abd al-Hamid was succeeded by his nephew,
Selim III.