The aim of this study was to design a relationship model for trust in the coach and the dimensions of teamwork process in the first division league of Iran football clubs. The research method was descriptive-survey based on structural equation modeling that was conducted as a field experiment. The statistical population included all players of Iran football first division league in 2016 (N=450). 200 subjects were selected as the sample of the study by convenience sampling method. To measure the variables of the study, two standard questionnaires (leadership trust by Senjaya and Pekerti (2010), and a researcher-made teamwork questionnaire) were used. In order to determine the reliability of the questionnaire, Cronbach's alpha coefficient was used. The coefficients for the questionnaires of trust in coach and teamwork were 0.84 and 0.94 respectively. For data analysis, descriptive and inferential statistics (Pearson correlation coefficient and structural equation modeling) were used. The results showed that the trust in coach variable had a direct and significant effect on teamwork (impact factor: 0.73). The findings indicated the important role of trust in coach variable in teamwork; therefore, trust as a positive and rational relationship should emerge between athletes and coaches.