The Wahhabi war, also known as the Ottoman-Saudi War, (1811–1818) was fought from early 1811 to 1818, between the Ottoman Empire, their vassal and ally the Eyalet of Egypt, and the Emirate of Diriyah, the First Saudi State, resulting in the destruction of the latter.

Ottoman Egypt was an administrative division of the Ottoman Empire after the conquest of Mamluk Egypt by the Ottomans in 1517. The Ottomans administered Egypt as a province (eyalet) of their empire. It remained formally an Ottoman province until 1914, though in practice it became increasingly autonomous during the 19th century and was under de facto British control from 1882.