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.

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.