The Sanjak of Alexandretta (Turkish: İskenderun Sancağı, French: Sandjak d'Alexandrette, Arabic: لواء الإسكندرونة / Liwa' Al-Iskandarūna) was a Mandate of Syria sanjak composed of two qadaas of the former Aleppo Vilayet (Alexandretta and Antioch, now İskenderun and Antakya) and became autonomous under Article 7 of the 1921 Treaty of Ankara: "A special administrative regime shall be established for the district of Alexandretta. The Turkish inhabitants of this district shall enjoy facility for their cultural development. The Turkish language shall have official recognition". That was because of the presence of Turkic peoples along with Syriacs and Arabs of various religious denominations: Sunni Muslims, Alawites, Syriac Orthodox, Greek Orthodox, Greek Catholics and Maronites. There were also communities of Armenians, Greeks, Assyrians, Jews and Kurds.
In 1923, Alexandretta was attached to the State of Aleppo, and in 1925, it was attached to the combined State of Syria, still with special administrative status.