Sayid Abdullah (1873–1933) was the last Khan of Khiva of the Khongirad (Qungrat) dynasty, from 1 October 1918 until 1 February 1920. His father was Muhammad Rahim Khan II.

The Khanate of Khiva was a Central Asian polity that existed in the historical region of Khwarazm from 1511 to 1920, except for a period of Afsharid occupation by Nader Shah between 1740 and 1746. Centred in the irrigated plains of the lower Amu Darya, south of the Aral Sea, with the capital in the city of Khiva. It covered present-day western Uzbekistan, southwestern Kazakhstan and much of Turkmenistan before the Russian conquest at the second half of the 19th century.