Dium is a Latinisation of Greek Dion, and may refer to: Dion, Pieria, in modern Greece Dium (Chalcidice), a city of ancient Chalcidice, now on Mount Athos Dium (Coele-Syria), a city of ancient Coele-Syria, now in Jordan or Syria Dium (Crete), a city of ancient Crete, Greece Dium (Euboea), a town of ancient Euboea, Greece Dium (Pisidia), a town of ancient Pisidia, now in Turkey Dium (Thessaly), a town of ancient Thessaly, Greece