The Tanzimât (Ottoman Turkish: تنظيمات, Tanẓīmāt), literally meaning reorganization of the Ottoman Empire, was a period of reformation that began in 1839 and ended with the First Constitutional Era in 1876. The Tanzimât reform era was characterized by various attempts to modernize the Ottoman Empire and to secure its territorial integrity against nationalist movements from within and aggressive powers from outside of the state. The reforms encouraged Ottomanism among the diverse ethnic groups of the Empire, attempting to stem the tide of nationalist movements within the Ottoman Empire.
The reforms sought to grant emancipation to non-Muslim subjects of the Empire and to integrate non-Turks more thoroughly into Ottoman society by enhancing their civil liberties and granting them equality throughout the Empire. Though many changes were made to improve civil liberties, many Muslim residents of the empire saw this as foreign influence on the world of Islam. This perception complicated reformist efforts made by the state.
The Tanzimât emerged from the minds of reformist sultans like Mahmud II and Abdülmecid I and prominent, often European-educated bureaucrats, who recognized that old religious and military institutions no longer met the needs of the empire. Most of the symbolic changes, such as uniforms, were aimed at changing the mindset of imperial administrators. Many of the officials that were affiliated with the government were encouraged to wear a more "western" style of dress. Many of the reforms were attempts to adopt successful European practices. The reforms were heavily influenced by the Napoleonic Code and French law under the Second Empire as a direct result of the increasing number of Ottoman students being educated in France. Changes included the elimination of the devshirme system of conscription in favour of universal conscription; educational, institutional and legal reforms; and systematic attempts at eliminating corruption. Included in the Tanzimat was a policy of so-called Ottomanism, which was meant to unite all of the different peoples living in Ottoman territories, "Muslim and non-Muslim, Turkish and Greek, Armenian and Jewish, Kurd and Arab". This policy officially began with the Edict of Gülhane of 1839, declaring equality before the law for both Muslim and non-Muslim Ottomans.