Abdulaziz (Ottoman Turkish: عبد العزيز, romanized: ʿAbdü'l-ʿAzîz; Turkish: Abdülaziz; 8 February 1830 – 4 June 1876) was the sultan of the Ottoman Empire from 25 June 1861 to 30 May 1876, when he was overthrown in a government coup. He was a son of Sultan Mahmud II and succeeded his brother Abdulmejid I in 1861.
Abdulaziz's reign began during the Ottoman Empire's resurgence following the Crimean War and two decades of the Tanzimat reforms, though it was now reliant on European capital. He was the first Ottoman sultan who traveled to Western Europe in a diplomatic capacity, visiting a number of important European capitals including Paris, London, and Vienna in the summer of 1867.