The Atlas of the Socio-Demographic Development of Russia and Iran is a comprehensive scientific and practical publication that presents a cartographic model of cross-country comparisons of the socio-demographic development of the states. The model helps to obtain information about the main parameters of the socio-demographic situation in comparison with similar indicators, as well as to analyze the main trends of the socio-demographic development of the state and society. The Atlas is addressed to scientists, civil servants, social workers, teachers, graduate students, students (demographers, sociologists, political scientists, economists), as well as anyone interested in the socio-demographic development of Russia and Iran. The Atlas was prepared within the framework of the federal target program «Research and Development in Priority Areas of Development of the Scientific and Technological Complex of Russia for 2014–2020», approved by the Decree of the Government of the Russian Federation on May 21, 2013 No. 426, to the I Russian-Iranian sociological forum (Moscow, November 16–18, 2020).