The Action of 9 July 1806 was a minor engagement between a French privateer frigate and British forces off Southern Ceylon during the Napoleonic Wars. French privateers operating from the Indian Ocean islands of Île Bonaparte and Île de France were a serious threat to British trade across the Indian Ocean during the Wars, and the British deployed numerous methods of intercepting them, including disguising warships as merchant vessels to lure privateers into unequal engagements with more powerful warships. Cruising near the Little Basses Reef on the Southern coast of Ceylon, the 34-gun privateer Bellone was sighted by the 16-gun British brig HMS Rattlesnake, which began chasing the larger French vessel.