Slavic dialects of Greece
Eastern South Slavic dialects of Macedonian and Bulgarian are spoken by minority groups in the regions of Macedonia and Thrace in northern Greece. Usually, dialects in Thrace are classified as Bulgarian, while the dialects in Macedonia are classified as Macedonian, with the exception of some eastern dialects which can also be classified as Bulgarian.
Source: Wikipedia — Slavic dialects of Greece (CC BY-SA 4.0)