The purpose of the present study was to investigate the mediating role of professional ethics in the relationship of the organizational culture with social responsibility and the organizational commitment in sports organizations. 201 staff of sport and youth departments in Esfahan province completed the research questionnaires through stratified random sampling approach according to geographical distribution. For data analysis, structural equation modeling by Lisrel software was used. Results showed that organizational culture has a positive and significant effect on organizational commitment, by coefficient of 0.36, indirectly according to professional ethics mediator variable and on social responsibility by coefficient of 0.37. According to the research findings the mediator role of professional ethics variable as well as the research conceptual model was confirmed.
