Samandağ, formerly known as Süveydiye, is a municipality and district of Hatay Province, Turkey. Its area is 384 km2, and its population is 123,447 (2022). It lies at the mouth of the Asi River on the Mediterranean coast, near Turkey's border with Syria, 25 km (16 mi) from the city of Antakya. In February 2023, the town was heavily damaged by powerful earthquakes.

Hatay Province is the southernmost province and metropolitan municipality of Turkey. Its area is 5,524 km2, and its population is 1,686,043 (2022). 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, making it one of the three Turkish provinces not named after its administrative capital or any settlement. The second-largest city is İskenderun. 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.