Enterprise risk management (ERM) has emerged as a more integrated risk management (IRM) framework in recent years. Many studies have been conducted in recent years to determine the effects of ERM implementation on other parts of an organization. The purpose of this research was to explore the relationship between ERM implementation and organizational performance. The research sample consisted of Iranian banks that either had a license from the central bank of Iran (CBI) or were active in the stock market. A novel measure of ERM implementation was employed in this study. Furthermore, the return on equity (ROE) and Tobin's Q ratio were used as two measures of organizational performance. The results showed that there was a positive and significant relationship between ERM implementation and Tobin's Q ratio, whereas such a significant relationship was not observed between ERM implementation and ROE. The study findings suggested that the adoption of an ERM strategy influences the long-term performance of a firm, not its short-term performance.