Sokollu Mehmed Pasha (, ; ; Arebica: ; 1506 – 11 October 1579) was an Ottoman statesman most notable for being the Grand Vizier of the Ottoman Empire. Born in Ottoman Herzegovina into a Serbian Orthodox Christian family, Mehmed was recruited at an early age as part of the Ottoman devşirme system of recruiting Christian boys to be raised to serve as a janissary. He rose through the ranks of the Ottoman imperial system, eventually holding positions as commander of the imperial guard (1543–1546), High Admiral of the Fleet (1546–1551), Governor-General of Rumelia (1551–1555), Third Vizier (1555–1561), Second Vizier (1561–1565), and as Grand Vizier (1565–1579, for a total of 14 years, three months, 17 days) under three sultans: Suleiman the Magnificent, Selim II, and Murad III. He was assassinated in 1579, ending his near 15-years of service to several Sultans, as sole legal representative in the administration of state affairs.