This work attempts to present and systematically elaborate on the issues relating to the status of Macedonian minority in Greece after World War I and Piece conference in Versailles. Special attention is given to provision and Acts of international law that relate to the status of minorities in general and Greece's obligations towards its minorities arising from international treaties; changes in the national composition of the Aegean part of Macedonia; a comparison of the status of minorities in all four states with substantial Macedonian population; and, primarily and above all, the treatmant of Macedonian national minority by the Greek state, political parties and the general public. An additional motive, naturally, was the notion that neither legal nor historic studies have thus far deeply explored the legal status of Macedonians in the Aegean part of Macedonia in Greece after World War I.