Introduction: Knowledge sharing is the mechanisms that contribute to the dissemination and application of knowledge, will help employees to fulfill their job duties. This mechanism can be affected by many individual and organizational factors. In this regard the aim of this study was Offer the causal model of abusive supervision, perception of organizational justice and knowledge sharing behavior among Shiraz University of Medical Sciences.

Methods: the method of this study was descriptive - correlational with use of structural equation model. The sample includes 215 employees of Shiraz Medical Sciences University that they were selected among the approximately 700 employees with using random sampling. The research instrument were measurement of abusive supervision, knowledge sharing behavior and perception of organizational justice that using the Spearman correlation coefficient, validity and using Cranach’s alpha coefficient, reliability was calculated and the results showed that the questionnaires had good reliability and validity.

Results: The results showed that abusive supervision has a significant negative impact on perception of organizational justice and knowledge sharing behavior of employees and the perception of organizational justice doesn’t have a mediation role in the relationship between abusive supervision and employees' knowledge sharing behavior.

Conclusion: the managers of health organizations to increase knowledge sharing between their employees must take care of their supervisory actions and by avoiding abuses of their supervisory duties, increased knowledge sharing and success of their organization.