Abstract
The article is written to show significant place of Oguz in the history of medieval West Asia and East Europe as other nomad tribes of Eurasia. The fact that Oguz took a place in the world history scene is closely related to many events. It took place during collapse of Samanid and Buwayhid states, Ghaznavid dynasty, and Byzantine Empire. One of the important events of that period is formation of Seljuk Empire and beginning of Crusades, therefore historical fate of Oguz is closely connected with many regions of Middle East, Western Asia and Asia Minor. Oguz tribes in their turn, had ethnical, political, and social influences on the history of neighboring countries. Significant influence of Ogus had been made in the history of Black Sea, South Russian territory, and Balkan.Migrated Oguz tribes had role in formation of many nations as countries. There are many debatable and unresolved issues of ethnical formation of Oguz tribes, which attract interests of many scientists. In the article the role of Oguz tribes in formation of Azerbaijan people on ethnical-linguistic and ethnical-toponymic basis is analyzed.