Hatay Province (Hatay ili, ˈhataj) is the southernmost province of Turkey. It is situated mostly outside Anatolia, along the eastern coast of the Levantine Sea. The province borders Syria to its south and east, the Turkish province of Adana to the northwest, Osmaniye to the north, and Gaziantep to the northeast. It is partially in Çukurova, a large fertile plain along Cilicia. Its administrative capital is Antakya (ancient Antioch), making it one of the three Turkish provinces not named after its administrative capital or any settlement. The second-largest city is İskenderun (formerly Alexandretta). Sovereignty over most of the province remains disputed with neighbouring Syria, which claims that the province had a demographic Arab majority, and was separated from itself against the stipulations of the French Mandate of Syria in the years following Syria's occupation by France after World War I.
Settled since the early Bronze Age, Hatay was once part of the Akkadian Empire, then of the Amorite Kingdom of Yamhad. Later, it became part of the Kingdom of Mitanni, then the area was ruled by a succession of Hittites and Neo-Hittite peoples that later gave the modern province of Hatay its name.
The Neo-Hittite kingdom of Palistin was also located here.
The area came under the control of Assyrians (except for a brief occupation by Urartu), and later the Neo-Babylonians and the Persians.
The region was the center of the Hellenistic Seleucid Empire, home to the four Greek cities of the Syrian tetrapolis (Antioch, Seleucia Pieria, Apamea, and Laodicea). From 64 BC onwards the city of Antioch became an important regional centre of the Roman Empire.
Among the famous archaeological sites in the province are Alalakh, Tell Tayinat, Tell Judaidah, and Antioch.
The area was conquered by the Rashidun Caliphate in 638 and later it came under the control of the Umayyad and Abbasid Arab dynasties. Tulunids briefly ruled it before Abbasid one was restored. From the 10th century onwards, the region was controlled by the Aleppo-based Hamdanids after a brief rule of Ikhshidids.