The article deals with the regionalization of social processes and their specific manifestations in the post-Soviet space. According to the author, regionalization is developing at four levels-international (macroregional), subregional, intraregional and on country levels. The most important one is the international level. Specific features of regionalization at each level of the post-Soviet space are described. The author draws a conclusion that the post-Soviet space is the epicenter of regionalization in contemporary world.