The Siege of Zara, also known as the Blockade of Zara, was a military event that took place between 22 November and 5 December 1813, during the Adriatic Campaign of the Napoleonic Wars. During the siege, an Anglo-Austrian force under command of George Cadogan in HMS Havannah blockaded and bombarded Zara (modern day Zadar) which was then held by a French garrison. Within two weeks, the garrison surrendered to the attackers.