The Persian Gulf campaign of 1809 was an operation by the British East India Company backed by the Royal Navy to force the Al Qasimi to cease their raids on British ships in the Persian Gulf, particularly on the Persian and Arab coasts of the Strait of Hormuz. The operation's success was limited as the Royal Navy forces, already heavily involved in the Napoleonic Wars, were unable to permanently suppress the strong fleets of the Al Qasimi of Ras Al Khaimah and Sharjah. The expedition did achieve its short-term goals by destroying three Al Qasimi bases and over 80 vessels, including the largest Al Qasimi ship in the region, the converted merchant ship Minerva. Although operations continued into 1810, the British were unable to destroy every Al Qasimi vessel. By 1811, attacks had resumed, although at a lower intensity than previously.

Piracy in the Persian Gulf describes the naval warfare that was prevalent until the 19th century and occurred between seafaring Arabs in Eastern Arabia and the British Empire in the Persian Gulf. It was perceived as one of the primary threats to global maritime trade routes, particularly those with significance to British India and Iraq. Many of the most notable historical instances of these raids were conducted by the Al Qasimi tribe. This led to the British mounting the Persian Gulf campaign of 1809, a major maritime action launched by the Royal Navy to bombard Ras Al Khaimah, Lingeh and other Al Qasimi ports. The current ruler of Sharjah, Sultan bin Muhammad Al Qasimi argues in his book The Myth of Piracy in the Gulf that the allegations of piracy were exaggerated by the East India Company to cut off untaxed trade routes between the Middle East and India.