Aims: Trust is one of fundamental preconditions for economic, social, cultural, and political development of any society. The aim of this study was to investigate the relationship between emotional intelligence and social and family support with social trust in prisoners.

Materials & Methods: 310 prisoners in Sepidar prison were enrolled in this study. Bar-on Emotional quotient inventory, Mary procidano and Kenneth heller’s social support questionnaire and Sharif & Safarinia social trust questionnaire were administered to collect data. Multistage regression and correlation coefficient were used to analyze the data.

Findings: There was a significant relationship between emotional intelligence and social and family support with social trust (P<0/01, r=0/29, 0/17). Social and family support could predict 8 percent of the variance of social trust. In addition, coping with stress, adaptation, and interpersonal skills could predict 7 percent of the variance of social trust.

Conclusion: Social trust can be upgraded by enhancing emotional intelligence and social and family support in prisoners.