Xenarchus

Xenarchus or Xenarchos may refer to:

• Xenarchus (comic poet) (4th century BC), ancient Greek playwright of Middle Comedy
• Xenarchus (strategos) (fl. 175 BC), ancient Greek ambassador to Rome from the Achaean League
• Xenarchus of Seleucia (1st century BC), ancient Greek philosopher and grammarian
• Xenarchus (moth), a genus of moth