Objective of the study is the consideration of the ethnogender specifics of the polyethnic South-Russian population modern identity. The methodological basis of the research. Based on the materials of applied sociological research, the article analyzes the ethno-gender features of the we-identity of the population of three subregions of the South of Russia –Rostov region, Adygea and Dagestan. In an empirical study, the analysis of the structure of group identity of the South-Russian population was carried out based on a methodology verified in a wide range of studies to measure the degree of closeness of an individual in relation to various we-groups (primordial, groups of everyday communication, broad constructed communities). Unlike self-identity, which is more based on a rational understanding of one's I, group identification is characterized to a greater extent by affective attribution to social groups and communities. Research results. The empirical measurements carried out show that, in general, women in the South of Russia more often than men identify themselves with groups of everyday communication (generational, professional, ethnic), while men are more inclined to identify themselves with large constructed communities (citizens of Russia, residents of their republic, population of the North Caucasus). More pronounced differences in the structure of group identification of gender subgroups of Rostov region, and a higher degree of coincidence of we-identities of men and women of Adygea and Dagestan are fixed. It is also revealed that, regardless of gender, the Russian population of the region more often identifies itself on a general civil basis, and among the republican population, the share of ethnic and regional (in Adygea and Dagestan) and confessional (in Dagestan) identifications is higher. The discrepancy between the structure of population identification by ethno-gender segments can impede the cohesion of residents and the integration of a multi-component region. Prospects of the study are connected with further research of the ethnogender specifics of the polyethnic South-Russian population modern identity.