The massacre of Phocaea occurred in June 1914, as part of the ethnic cleansing policies of the Ottoman Empire that included exile, massacre and deportations. It was perpetrated by irregular Turkish bands against the predominantly ethnic Greek town of Phocaea, modern Foça, in the east coast of the Aegean Sea. The massacre was part of a wider anti-Greek campaign of genocide launched by the Young Turk Ottoman authorities, which included boycott, intimidation, forced deportations and mass killings; and was one of the worst attacks during the summer of 1914.

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.