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.

The Persian Gulf, sometimes called the Arabian Gulf, is a mediterranean sea in West Asia. The body of water is an extension of the Indian Ocean located between Iran and the Arabian Peninsula. It is connected to the Gulf of Oman in the east by the Strait of Hormuz. The Shatt al-Arab river delta forms the northwest shoreline.