Yettishar (Chagatai: یته شهر; Uyghur: يەتتەشەھەر; lit. 'Seven Cities' or 'Heptapolis'), also known as Kashgaria or the Kashgar Emirate, was a Turkic state in Xinjiang that existed from 1864 to 1877, during the Dungan Revolt against the Qing dynasty. It was an Islamic monarchy ruled by Yakub Beg, a Kokandi who secured power in Kashgar (later made Yettishar's capital) through a series of military and political manoeuvres. Yettishar's eponymous seven cities were Kashgar, Khotan, Yarkand, Yengisar, Aksu, Kucha, and Korla.
In 1873, the Ottoman Empire recognised Yettishar as a vassal state and Yakub Beg as its emir. The Ottoman flag flew over Kashgar from 1873 to 1877.