The aim of this study was to investigate the effects of social networks on political activism among students was Esfahani. Actors, ability and having the will and the ability of social action and the use of tools, symbols, signs in the context of social values, and mechanisms in technologies, for mutual communication. Political actors in dialogue and collective behavior within the range of interests, institutions and social networks, formation and expansion of civic participation and political action of the web 2. The method used in this study is a survey. Techniques of data collection was a questionnaire whose reliability is the formal method - content and its reliability was measured by Cronbach's alpha statistic. The research population consisted of all undergraduate university students that volume 384 samples were selected by cluster sampling. The data collected and analyzed using spss software was analyzed. The results of the analysis of the data showed that social networks and political action in case there is a significant relationship.