Lourié S.V. IInterethnic Marriages as a Cultural Phenomenon: Socio-Humanitarian and Natural-Science Aspects of Culture. Sibirian Journal of Anthropology, 2020, Vol. 4, Issue 1 (03), pp. 117-128. Lourié S.V. IInterethnic Marriages as a Cultural Phenomenon: Socio-Humanitarian and Natural-Science Aspects of Culture. Sibirian Journal of Anthropology, 2020, Vol. 4, Issue 1 (03), pp. 117-128.ISSN 2542-1816DOI 10.31804/2542-1816-2020-4-1-117-128ÐÈÍÖ: https://www.elibrary.ru/item.asp?id=42585588Posted on site: 15.05.20 AbstractThe stable level of interethnic marriage in Russia last half century are analyzed in the article. And it is despite the multidirectional social processes in the country. The article is raised the question: perhaps the proportion of interethnic marriages depends not only on sociopolitical processes? Sociopolitical processes certainly determine the motivation of people, but it depend on implicit ethnic processes Thus, culture has two sides: the socio-humanitarian one, familiar to culturologists, and the equally important side is natural sciencely. This is natural if we understand culture as the vital principle of society, similar to how we understand the soul as the vital principle of the body. Culture has its bodily slice, existing along with the ideally slice. Exogamy as a cultural phenomenon lies at the juncture of socio-humanitarian and natural-biological regularities. Keywords: Interethnic marriages, exogamy, culture, adaptation, complementarity, values, motivation.