Religious safety and religious extremism in the context of the national security of the Russian Federation is the subject of the research, and the object of the research is youth as the social group which is most susceptible to the influence of radical religious and extremist ideologies. The idea that at the present stage of the development of society religious safety is one of the most important components of the national security of Russia, as well as any state in the world, is moved forward in the article. At the same time, today the problem of the religious safety of society and religious extremism of various confessional orientations remains insufficiently studied. The concepts 'religious safety' and 'religious extremism' are considered in this article. It is emphasized that the mechanisms of counteraction to the distribution of extremist religious attitudes among teenagers and youth need additional studies. The author substantiates the urgent need of modern Russian society in ensuring the religious safety capable to counter the threats proceeding from destructive nonconventional religious movements, to oppose an ideologically reasonable strategy and tactics to their activity. The materials of the state and departmental statistics, basic provisions of ensuring religious safety formulated in the regulatory legal acts of the Russian Federation and the European Parliament, as well as the methods of secondary analysis on the basis of publications of research results and tabular materials which contain the sociological reports of researchers have been used as the methodological toolkit. As the result of the research, certain conclusions have been drawn showing that in Russia and the modern world insufficient attention is still paid to the religious safety of personality. The Russian Federation makes poor use and consideration of the foreign European states' experience in statutory regulation and preventive actions counteracting the activity of religious destructive denominations, sects, the experience of information war against religious extremists and terrorists.