Sacred War may refer to:

• A series of wars carried out by members of the Amphictyonic League:
  • First Sacred War (595–585 BC)
  • Second Sacred War (449–448 BC)
  • Third Sacred War (356–346 BC)
  • Fourth Sacred War (339–338 BC)
• "The Sacred War", Soviet song associated with the Second World War

• Crusade (disambiguation)
• Holy War (disambiguation)
• Jihad (disambiguation)
• Religious conflict (disambiguation)
• War of Religion (disambiguation)