Amyntas III (
Greek: Ἀμύντας Γ΄; died 370 BC), was a Macedonian king of
Macedon in 393 BC, and again from 392 to 370 BC. He was the son of Arrhidaeus and grandson of Amyntas, one of the sons of
Alexander I. His most famous son is
Philip II, father of
Alexander the Great. He is historically considered the founder of the unified Macedonian state.