The aim of this research is to analyze the relationship between operational risk management and customer complaints in Omani banks. Initially, the current research carried out a quantitative approach on the concepts which connect the variables of the current research, where the data have been collected via a survey on commercial banks in Oman. The findings demonstrate that the operational risk management has a negative and significant link with customer complaints due to there is a proper manner in dealing with risks. On the other hand, the findings revealed that there is a negative impact on absence to deal with risks facing Omani banks. Also, it has been noted that in the event of an increase in operational risk management, customers' complaints are decreased. The current research has added a value and notable contribution lies in its elucidation for the importance of the impact of operational risk management on customer complaints in Omani banks