Oxya (, before 1927: Μπλάτση – Blatsi) is a village and a community in Kastoria Regional Unit, Macedonia, Greece.

In 1945, Greek Foreign Minister Ioannis Politis ordered the compilation of demographic data regarding the Prefecture of Kastoria.. The village Oxya had a total of 265 inhabitants, and was populated by 245 Slavophones with a Macedonian national consciousness. "Οξυές, Πληθυσμός: 265, Σλαυόφωνοι: 245, Συνείδησις Βουλγαρική: ναι"

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