Battle of Placentia may refer to:
Battle of Placentia (217 BC), fought between the Roman Republic and the Carthaginians Battle of Placentia (194 BC), fought between the Roman Republic and the Boii Battle of Placentia (69), fought between forces of the Emperor Otho and his opponent Vitellius Battle of Placentia (271), fought Between the Roman Empire and the Juthungi Battle of Placentia (456), fought between forces of the Emperor Avitus and his opponents Majorian and Ricimer Battle of Placentia (1692), fought between the English and the French in Placentia, Newfoundland Battle of Piacenza (1746), fought between the Franco-Spanish and Austria