The aim of this correlational study was to investigate the relationship of organizational justice, job satisfaction, organizational commitment, and organizational trust to self-assessment of organizational excellence. Research instruments in this research included: 1. Organizational justice questionnaire ((Niehoff & Moorman, 2003), (a=0.89)), 2. Organizational commitment questionnaire developed by the current researchers (a=0.93), 3. Spector job satisfaction questionnaire ((1997), a=0.84)), 4. Organizational trust inventory ((Shame, (2003) (a=0.91)), and 5. Self-assessment questionnaire of organizational excellence (a=0.86). The population of the study was Islamic Azad University professors in region four. A sample of one fourth of the instructors was selected using multi-stage sampling method. They were administered the questionnaires. Finally, 312 faculty members were selected for the study. The overall results indicated that the key variables accounting for self-assessment of excellence performance were distributive justice, organizational commitment and organizational trust. Distributive justice had a direct effect (0.491) and an indirect effect (0.137) mediated by organizational commitment on self-assessment of organizational excellence. Organizational commitment also had a direct effect (0.478) and an indirect effect (0.134) mediated by self-assessment of organizational excellence. Further, trust had a direct effect (0.319) and an indirect effect through organizational commitment (0.089). Other variables in the model negligibly affected the endogenous variable, that is, self-assessment of organization excellence. Based on the fit indexes the model fitted the data fairly well.