The Battle of Pulo Aura was a minor naval engagement of the Napoleonic Wars fought on 14 February 1804, in which a large British East India Company (EIC) convoy intimidated, drove off and chased away a powerful French Navy squadron. Although the French squadron was much stronger than the British convoy, Commodore Nathaniel Dance's aggressive tactics persuaded Counter-admiral Charles-Alexandre Léon Durand Linois to retire after only a brief exchange of fire. Dance then chased the French squadron until his convoy was out of danger, whereupon he resumed his passage toward British India.
The battle occurred during an extended commerce raiding operation by Linois' squadron, led by the ship of the line Marengo. In 1803, before war broke out, Linois sailed to the Indian Ocean to install garrisons in French and Batavian colonies and target British merchantmen. A prime target was the "China Fleet," a convoy of East Indiamen carrying millions of pounds' worth of trade goods. Although escorted by smaller merchant ships, the only available escort warship was the EIC armed brig Ganges. Dutch informants told Linois of the fleet’s destination and date of departure from Canton while he was at Batavia, and he set sail on 28 December 1803, eventually locating the convoy in early February.