PurposeThe purpose of this paper i to determine which group – the managerial personnel or the directors of libraries – had a more extensive social network and were more eager to engage in cooperation, in other words – had the qualities believed to be important in managerial positions.Design/methodology/approachThe paper presents the results of research on the levels of individual social capital, as well as the social activity among librarians in 20 countries across the world, which are important for integration with the local community and development of library services.FindingsThe research confirmed that library directors are more active than managerial personnel or line workers, although there were areas in which line workers and managers scored higher than directors. In some areas of civic activity, line workers and managers, rather than directors, led the way.Research limitations/implicationsThis is the first research into the social capital and social activity of the managerial personnel of libraries conducted on such a large scale – in 20 countries across the world. The electronic survey resulted in the total of 6,593 valid responses, which were analysed statistically. The one-way analysis of variance (ANOVA) statistics were calculated, and the chi-square test of independence and the Mann–Whitney U test were applied. The level of individual social capital was calculated on the basis of a resource generator – Questionnaire for the Measurement of Individual Social Capital (KPIKS).Originality/valueThis is the first research into the social capital and social activity of the managerial personnel of libraries conducted on such a large scale – in 20 countries across the world. The electronic survey resulted in the total of 6,593 valid responses, which were analysed statistically. The one-way ANOVA statistics were calculated, and the chi-square test of independence and the Mann–Whitney U test were applied. The level of individual social capital was calculated on the basis of a resource generator – Questionnaire for the Measurement of Individual Social Capital (KPIKS).