Antiochia ad Pyramum was an ancient coastal city of Cilicia

Cilicia

In antiquity, Cilicia was the south coastal region of Asia Minor, south of the central Anatolian plateau. It existed as a political entity from Hittite times into the Byzantine empire...

, on the Pyramus (also Pyramos, now the Ceyhan Nehri) river, in Anatolia

Anatolia

Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising the majority of the Republic of Turkey...

. The location of the city is on the Karataş

Karatas

Karataş is a small city and a district in Adana Province, on the Mediterranean coast of Turkey, 47 km from the city of Adana, between the rivers of Seyhan and Ceyhan, the Pyramos of Antiquity...

 Peninsula, Adana Province

Adana Province

Adana Province is a province of Turkey located in south-central Anatolia. With a population of 2,085,225, it is the fifth most populous province in Turkey. The administrative seat of the province is the city of Adana, home to 78% of the residents of the province...

, Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

, a few km from the city of Karataş. The course of the Pyramus has changed markedly since ancient times and the location of the ruins is no longer adjacent to the river, but decidedly west of its present course. The formerly important ancient site of Mallus

Mallus

Mallus or Mallos was an ancient city of Cilicia Campestris lying near the mouth of the Pyramus river, in Anatolia. In ancient times, the city was situated at the mouth of the Pyramus , on a hill opposite Magarsus which served as its port. The district was called from it, Mallotis...

lies a few km inland from Antiochia ad Pyranum along the former course of the Pyramus.