THE AIM OF THIS STUDY WAS TO INVESTIGATE THE RELATIONSHIP BETWEEN CLIMATE OF SILENCE AND ORGANIZATIONAL TRUST AS ANTECEDENTS AND ORGANIZATIONAL COMMITMENT AS A CONSEQUENCE WITH ORGANIZATIONAL SILENCE. 267 OFFICIAL EMPLOYEES OF ISFAHAN PROVINCE GAS COMPANY WERE SELECTED BY STRATIFIED RANDOM SAMPLING AND RESPONDED TO RESEARCH TOOLS. RESULTS ANALYSIS WITH SIMPLE CORRELATION AND MULTIPLE REGRESSION INDICATED THAT THERE IS A SIGNIFICANT RELATIONSHIP BETWEEN ORGANIZATIONAL SILENCE AND ITS ANTECEDENTS AND CONSEQUENCES. MOREOVER, TOP MANAGEMENT ATTITUDES TO SILENCE, COMMUNICATION OPPORTUNITIES AND TRUST IN SUPERVISOR PREDICTED ORGANIZATIONAL SILENCE.