Öz
The Oghuzs, who appear as a tribe union in the Turkish world, appear as founding and bearing element in almost all Turkish states and dynasties that have established a state with their structures. Besides, we see that they also played a role in the collapse of the Turkish states. Starting from the Huns, the Oghuzs are mentioned in the sources with different tribe names in the Gokturks, Uyghurs, Bulgarians, Seljuks, Karamanids, Ottomans, Akkoyunlu and Karakoyunlu states. Although they differed in terms of belief before and after Islam, Oguz Kagan and his sons were referred to in legends with an arithmetic organization of 24, especially after Islam. The Oghuzs, who appear in both Orkhon monuments and Chinese sources in the pre-Islamic period, were recorded as Three Oghuzs, Six Oghuzs, Nine Oghuzs, Ten Oghuzs or Ogurs. It is a historical fact that these tribes, which we see to be effective in the social structure especially in the Orkhon monuments, also has an impact on the collapse of the state. The epic told around Oghuz Khan and his sons before Islam, after Islam, was discussed and included in the works first in Kaşgarlı Mahmud's Divan-ı Lügatü't Türk, then in Reşidüddin's Camiu't Tevarih, and then in Yazıcızade Ali's Tevarih-i Al-i Selçuk. In our article, we will examine the information conveyed in the relevant sources and try to deal with the role of the Oghuz tribes in the post-Islamic Turkish States.