Background and purpose:Organization must keep current skills, abilities, and in the current field of competition, and move one step ahead of other competitors; for this purpose, must be a high degree of trust inside the organization. Cybernetic management is a new approach in management of organizations that its main task according to internal issues. This study aimed to investigate the relationship between cybernetics management and organizational trust among librarians of Mazandaran University of Medical Sciences.Materials and methods:This is applied and analytical survey. which its population included all librarians of Mazandaran University of Medical Sciences, amounting to 42 people which were selected by census and participated in this research.Results:There has no relationship between components of Cybernetics management (participative decision making, commitment, pay equity, Correct flow of information, develop a sense of ownership, online education) with organizational trust amongst librarians of Mazandaran University of Medical Sciences. And there has a significant relationship between flat Structure of cybernetics management and organizational trust. For data analysis was used Kolmogorov-Smirnov test and linear regression.Conclusion:There is no significant relationship between Cybernetic management and organizational trust amongst librarians of Mazandaran University of Medical Sciences.