Magas (Greek: Mάγας) was a Greek Macedonian nobleman who lived in the 4th century BC. His origin is obscure except that he came from the region of Eordaea. Little is known about his life.

Magas married the noblewoman Antigone, the child of Cassander and the niece of the powerful regent Antipater. His marriage to Antigone reveals that Magas was a nobleman of some social status and influence as he married a close relation to the powerful regent and his wife was a distant collateral relative to the Argead dynasty. After Magas married Antigone, they settled in Eordaea. Antigone bore Magas a daughter, his only known child, Berenice I of Egypt. Magas had two namesakes: his grandson Magas of Cyrene and his great-great-grandson Magas of Egypt.

Family tree of Magas of Macedon

Antipater regent of Macedonian EmpireCassander nobleman from Paliura
Cassander king of Macedonia 305-297 BCAntigone of MacedonMagas of Macedon nobleman from Eordaea
Alexander V king of Macedon 297-294 BCPhilip nobleman from MacedoniaBerenice IPtolemy I king of EgyptEurydice
Antigone of EpirusPyrrhus I of EpirusTheoxena Elder ∞ Agathocles tyrant of Syracuse, king of SicilyMagas of Cyrene king of Cyrene 276-250 BC ∞ Apama II of SeleucidsPhilotera deifiedPtolemy II Philadelphus king of Egypt ∞ 1.Arsinoe I 2.Arsinoe IIArsinoe II ∞ 1.Lysimachus of Thrace 2.Ptolemy Keraunos king of Macedonia 3.Ptolemy II PhiladelphusPtolemy Keraunos king of Macedon 281-279 BC ∞ Arsinoe II
Ptolemy military officerOlympias IIAlexander II of EpirusArchagathus epistates of Cyrene ∞ OenantheTheoxena YoungerBerenice II ∞ 1.Demetrius the Fair king of Cyrene 250-249 BC 2.Ptolemy III Euergetes(1) Ptolemy III Euergetes king of Egypt ∞ Berenice II(1) Lysimachus prince(1) BereniceAntiochus II Theos emperor of Seleucid Empire(1) Ptolemy Epigonos kng of Telmessos(1) Lysimachus prince(1) Philip prince
PhthiaDemetrius II of Macedon 239-229 BCPyrrhus II king of Epirus 242-238 BCPtolemy king of Epirus 238-235 BCAgathocles ∞ Oenanthe(2) Magas of Egypt died 20 y.o.Arsinoe IIIPtolemy IV Philopator king of EgyptLysimachus king of TelmessosEpigonos prince