In the context of the development of the knowledge society, obtaining reliable, high-quality information is becoming an important task. The library can fully implement this need. The practice of popularizing scientific knowledge, inherited by modern libraries from the Soviet model of librarianship, continues to be a key area of their activities. Exhibitions, lectures, seminars and other events are organized to attract readers’ attention to scientific content. The purpose of the article is to summarize the activities aimed at popularizing scientific and popular science knowledge in the national libraries of the CIS. The official library websites have served as a source. The conducted analysis have allowed the conclution that the activities to disseminate scientific knowledge are carried out at a high level in the national libraries of Russia, Belarus and Kazakhstan. Events are held with the involvement of scientists and specialists, but rarely and irregularly. The activities of libraries in this direction should be continued, which is due, firstly, to the rapid growth of the volume of information and the need to verify it. Secondly, library collections are an effective tool against the dissemination of false information, as they are equipped with publications that have undergone scientific peer review, which eliminates the dissemination of fake information. In addition, the library is accessible to all segments of society and remains a free cultural institution.
