Ali Dinar (; 6 November 1916) was the last sultan of Darfur and ruler from the Keira dynasty.
In 1898, with the decline of the Mahdists, he managed to regain Darfur's independence.
A rebellion led by him in 1915—in the context of his giving his support to the Ottoman Empire during the First World War— led the British government to dispatch the Invasion of Darfur, in which he was killed in action, after which his Sultanate was incorporated into Anglo-Egyptian Sudan.
Further reading
'Alī Dīnār, Last Sultan of Darfur, 1898–1916
References
Entry in the Encyclopædia Britannica
Jay Spaulding,Lidwien Kapteijns: An Islamic alliance: ʻAlī Dīnār and the Sānūsiyya, 1906-1916 at Google Books