The Orontes or Nahr al-ʿĀṣī, or simply Asi is a 571 kilometres (355 mi) long river in Western Asia that begins in Lebanon, flowing northwards through Syria before entering the Mediterranean Sea near Samandağ in Hatay Province, Turkey.

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.