The purpose of this study is to examine the relationship between Organizational justice, Organizational Trust, and Organizational Behaviour Citizenship. The research method is descriptive (surveying). The population consists of 315 heads of different departments of Islamic Azad University (region one) in 2010-11 out of whom118 were selected through simple random sampling. Three questionnaires of Organizational justice, Organizational Trust, and Organizational Citizenship Behavior were used as the study instruments. Their reliability was estimated as 0.831, 0.828, and 0.884 respectively. For data analysis, SPSS, and the statistical methods of correlation coefficient matrix, simple and multiple regressions and path analysis were used. The findings showed (a) there is a positive significant relationship between the components of Organizational Justice, Organizational Trust and Organizational Behavior Citizenship; (b) There is a positive relationship between Organizational Justice, Organizational Trust, and Organizational Citizenship Behavior; (c) There is a positive relationship between the Trust of friendship and respect, duty, virtue, and generocity of the civic dimensions of organizational behavior, and (d) there is a positive relationship between the competence, reliability, and benevolence of the dimensions of organizational trust and organizational justice.