Background: “Organizational trauma" and "organizational ethics” are the key variables of interest to researchers in the field of organizational management. Therefore, the present study examined the relationship between organizational trauma and organizational ethics of staff in Urmia University and sought to determine whether organizational trauma has a significant relationship with organizational ethics. Method: This study is applied, from the perspective of purpose; and descriptive-correlational, from that of research design. A sample of 230 employees was randomly drawn out of 630 employees of Urmia University as the statistical population. The data was collected using two standard questionnaires of organizational trauma and organizational ethics, and analyzed using partial least squares structural equation modeling (PLS-SEM). Results: The results showed that organizational trauma can overshadow organizational ethics up to 33 percent. The path coefficient of organizational trauma and organizational ethics variables was measured to be 2.52, which is more than 1/96 at the error rate of 0.05. Conclusions: According to the statistical results, research hypothesis was confirmed, and it was concluded that organizational trauma has a significantly negative impact on organizational ethics.