Abstract: The study considers the specifics of social chronotopes of the boundary regions of Russia and Ukraine. The social chronotope of a boundary region is defined as a conceptual paradigm according to which this administrative-territorial formation is considered as a geopolitical structure localized within a socio-cultural space (non-linear socio-cultural system). The most common specific features of the chronotope of the Ukrainian (discontinuity of the social space and time, mosaic structure, presence of a few centers of gravity) and the Russian (homogeneity, focus on a single center) boundary regions.