Târîh-i Cihângüşâ, is an often first-hand source on the development of the Mongol Empire. It is a sophisticated literary work and an essential account of the development of the Mongol Empire and Saljuks and Ismaʿilis. The work covers (I) the rise and career of Čengiz Khan and his successors down to the deaths of Güyük and Čaḡatāy, (II) the history of the Ḵᵛārazmšāhs, especially Qoṭb-al-Din Moḥammad and his son Jalāl-al-Din, besides the pre-Mongol Turkish dynasties in Central Asia and the Mongol governors before the arrival Hulāgu Khan, (III) the rest of Mongol history to Hulāgu Khan’s westward expedition besides the history of Ḥasan-e Ṣabbāḥ (q.v.) and the Ismaʿilis. By the way, it gives us some information about Turks and Turkish in his period. In this article, we examined Târîh-i Cihângüşâ, in terms of Turchology and Turkish studies sight. Firstly, information about Târîh-i Cihângüşâ, the importance of this work, and the various Turkish tribes in the work will be given, and then the Turkish names and terms that are very effective in the Mongol organisation will be discussed.

Keywords
Cihângüşâ, Juveyni, Târîh-i Cihângüşâ, Turkish, Turks