Purpose: One of the social problems of football spectators is their delinquent behavior and the reasons for this behavior. As a result, the aim of this study was identifying and ranking the effective factors in the delinquency of football spectators in Iran and its prevention strategies. Methodology: This study in terms of purpose was applied and in terms of implementation method was quantitative. The research population was football spectators in Iran, which the sample size were determined 400 people and this number were selected with using available sampling method. The research tool was a researcher-made questionnaire of delinquency of football spectators, which its face validity and reliability were confirmed and the data obtained from its implementation were analyzed with exploratory factor analysis test and Friedman's test in SPSS version 23. Findings: The results of the exploratory factor analysis test showed that the effective factors in the delinquency of football spectators in Iran were included the socio-economic factors, mental-psychological factors, managerial factors, events inside the football field and media, which whose content validity was higher than 0.60 and whose Cronbach's and combined reliability was higher than 0.80. Also, the results of Friedman's test showed that the most effective factors in the delinquency of football spectators in Iran were included the events inside the football field, managerial factors, socio-economic factors, mental-psychological factors and media, respectively. Conclusion: According to the results of this research, in order to reduce the delinquency of football spectators in Iran, respectively can manage the events inside the football field, improve the managerial factors, promote the socio-economic factors and mental-psychological factors, and optimize the media behaviors.
