Battle of Port Royal may refer to:

• The Battle of Port Royal (1690), Acadia, in King William's War
• The Siege of Port Royal (1707), Acadia, in Queen Anne's War
• The Siege of Port Royal (1710), Acadia, in Queen Anne's War
• The Siege of Annapolis Royal (1744), Nova Scotia, in King George's War (Annapolis Royal was formerly Port Royal, Acadia)
• The 1779 Battle of Port Royal Island, South Carolina, in the American Revolutionary War
• The 1861 Battle of Port Royal, South Carolina, in the American Civil War