The authors present the results of research carried out in the 2017/2018 academic year among foreign languages teachers at eight higher education institutions. The aim of the study was to find out the connection between the participation activity rate of foreign languages teachers in specially focused network pedagogical communities and the level of professional self-realization through their self-efficacy. We used methods of mathematical statistics, computer data processing and discursive reflextion for drawing logical conclusions from experimental data. 267 foreign languages teachers from Ukrainian universities participated in the first stage of research. During the second stage, 108 selected foreign languages teachers completed a questionnaire for collecting data and evaluating the level of their self-efficacy. Results indicate a significant difference in the professional self-realization levels among the members and non-members of specially focused network communities and confirm the suggested hypothesis.