The main purpose of this research was to investigate the impact of the organization's reputation in cyberspace and the participation of stakeholders on the sustainability of organizations in small Internet companies. This research was descriptive and correlational in terms of applied purpose and method. The statistical population of the research was managers of small Internet companies. The sampling method in this research was random sampling. Based on this, 290 questionnaires were distributed among the examined sample, and 259 healthy questionnaires were collected and analyzed. Data analysis was done by Smart PLS software. A standard questionnaire was used in this research to examine the research variables. The content validity of the questionnaires has been confirmed by several experts and the nominal validity has been confirmed by several people from the statistical community and respondents. The reliability of the questionnaire was also calculated by Cronbach's alpha, which was more than 0.7 for all aspects of the research. Convergent validity was also checked for the questionnaires, which was more than 0.5 for all dimensions, which is acceptable in humanities research. The results of the research showed that organizational reputation has a positive effect on the participation of stakeholders. Also, the participation of stakeholders other than the participation of regulatory stakeholders can increase the sustainability of small Internet companies. Also, the organizational reputation has a positive effect on the sustainability of the organization with the mediating role of participation other than the participation of regulatory stakeholders.