Phocaea or Phokaia was an ancient Ionian Greek city on the western coast of Anatolia. Greek colonists from Phocaea founded the colony of Massalia in 600 BC, Emporion in 575 BC and Elea in 540 BC.

Foça is a municipality and district of İzmir Province, Turkey. Its area is 251 km2, and its population is 34,946 (2022). The town of Foça is situated at about 69 km (43 mi) northwest of İzmir's city center on the Aegean coast. The district has a settlement and former municipality named Yenifoça, also along the shore and at a distance of 20 km (12 mi) from Foça proper. For this reason, Foça itself is locally often called as Eskifoça in daily parlance. The town is built on the site of the ancient Greek city of Phocaea.