In the article, the author examines the definition of the concept of «Diaspora». The concept of «Diaspora» is analyzed, the author identifies two approaches to the definition of this concept.

According to the first approach, the «diaspora» is interpreted in a broad sense and includes the entire part of an ethnic group living in the world or a certain region outside its state or national-territorial structure. According to the second approach, the diaspora is not only a collection of individual ethnic groups, but also a community organized and structured in a certain way.Not every ethnic group can create a diaspora, but only an ethnic group resistant to assimilation.

If objective support and reproduction of the diaspora is achieved by a complex interaction of social institutions and organizations, such as education, cultural, religious, political organizations and associations, then subjective is what unites, preserves ethnic community and prevents its dissolution in a foreign environment, national idea, historical memory, religious views. At the same time, the article also pays attention to controversial issues.