The flag of Macedonia — Σημαία της Μακεδονίας — is the Vergina Sun with 16 rays. This flag, the Vergina Sun, is commonly used as a symbol of Macedonia region in Greece and its subdivisions. It is also used by organisations of the Greek Macedonian diaspora, such as the Pan-Macedonian Association chapters of the United States and Australia, as well as numerous commercial enterprises and private citizens.

Early representations of the symbol go back to at least the 6th century BC, with hoplites depicted as bearing sixteen-pointed and eight-pointed sunburst symbols on their shields and armor and the same symbols being represented on coins from both island and mainland Greece from at least the 5th century BC. The Iliad describes the first panoply of Achilles as having star motifs.

Manolis Andronikos found the symbol on the Golden Larnax believed to belong to Philip II of Macedon, father of Alexander the Great. The "sunburst" symbol was already well-known as a symbol used widely in Hellenistic civilization. The symbol might represent the Sun god (Helios), whose role as a patron deity of the Argead dynasty might be implied by a story about Perdiccas I of Macedon narrated by Herodotus (8.127). In the early 1980s, following the discovery of the larnax, there was some debate as to whether the symbol should be considered the "royal emblem" of the Argeads specifically. Αs Eugene Borza (1982) pointed out, the symbol was widely used in Hellenistic-era art, and Adams (1983) emphasized its use as a decorative element in ancient Greek art in general and that it cannot be said to represent either a "royal" or "national" emblem of Macedon exclusively.

The Vergina Sun is an official state emblem of Greece and the Greek government proceeded to lodge a copyright as a state symbol at the World Intellectual Property Organization.