Abstract: This work is devoted to the migration processes that took place in the XVII-XVIII centuries among the Ingush tribes, which eventually led to the foundation of the first permanent Ingush settlement in the area of the modern city of Nazran. The analysis of information from historical sources on this issue, as well as the main versions that exist today, is carried out. At the republican scientific and practical conference "historical determination of the date of formation of Nazran", held on July 15, 2000, it was decided to consider the date of foundation of Nazran as 1781. However, some researchers still express the opinion that Ingush settlements in the Nazran valley began to arise only at the beginning of the XIX century. The purpose of the article is to confirm the validity of the officially established date of the founding of Nazran on the basis of data from historical sources.   And also to show that the development of the territory of the Nazran valley by Ingush tribes began in the XVII century. To achieve the purpose of the article, the author drew on a significant amount of scientific literature and archival data, comparing them with information from Ingush folklore. The novelty of this work lies in the fact that the issue of the foundation of Nazran is considered in the context of migration processes that took place among the Ingush tribes in the XVII-XIX centuries. Historical works on the history of the development of the territory of the Nazran Valley are summarized, comparing them with information from Ingush folklore. In the course of the research, the author comes to the following key conclusions: information from various sources related to this issue are consistent and complement each other; Ingush tribes began to develop the territory of the Nazran Valley in the XVII century, and the first permanent settlement in this territory appeared in 1780-1781. This happened after they concluded an agreement with the Kabardian and Kumyk princes.