The Tanzimât (Ottoman Turkish: تنظيمات, Tanẓīmāt), literally meaning reorganization of the Ottoman Empire (see ), was a period of reformation that began in 1839 and ended with the First Constitutional Era in 1876.
It was characterised by various attempts to modernise the Ottoman Empire and to secure its territorial integrity against internal nationalist movements and external aggressive powers. The reforms encouraged Ottomanism among the diverse ethnic groups of the Empire and attempted to stem the tide of nationalist movements within the Ottoman Empire.
The reforms sought to emancipate the empire's non-Muslim subjects and more thoroughly integrate non-Turks into Ottoman society by enhancing their civil liberties and granting them equality throughout the empire.
Many changes were made to improve civil liberties, but many Muslims saw them as foreign influence on the world of Islam. That perception complicated reformist efforts made by the state.
The reforms emerged from the minds of reformist sultans like Mahmud II and his son Abdülmecid I and prominent, often European-educated bureaucrats, who recognised that the 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 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 political corruption.