Thuwaini bin Said, Sultan of Muscat and Oman

Thuwaini ibn Said (Arabic سيد ثويني بن سعيد السعيد, DMG Sayyid Sa ʿ b Ṯuwainī īd as- Sa ʿ īd; . † 1866 in Sohar ) Sultan of Muscat and Oman was from 1856 to 1866.

After the death of his father Said ibn Sultan (1804-1856) Thuwaini claimed its authority throughout the empire. However, his brother Majjid took possession of the East African territories with Zanzibar, which he had already ruled in his father's absence. Since none of the counterparty could prevail, they agreed on the division of the empire, with Zanzibar should pay compensation to the poorer Muscat. After the outbreak of new fighting intervened Kingdom, placing a formal division of the empire by.

Oman and Muscat now increasingly impoverished, as accounted for by the fall of East Africa, a large part of the customs revenue from the trade. In addition, Oman lost by the opening of the Suez Canal in importance. With European steamship lines, the Omani sailing ships could not compete.

Even after the division of the empire came Oman not to rest, because now with Turki ibn Said a brother of Thuwaini rose (1861 ). Only with British help has 1864 attack of Wahabis are blocked, after they had penetrated as far as Sur. Over the infighting Thuwaini in 1866 by his son Salim ibn Thuwaini ( 1866-1868 ) killed in Sohar. However, this was not generally accepted and in 1868 by Azzan ibn Qays ( 1868-1871 ) driven into exile. Thuwainis son Hamid ibn Sa ʿ ibn Thuwaini ID was 1893 Sultan of Zanzibar.