Nursing leadership plays a critical role in shaping the work environment and patient care outcomes within Emergency Room (ER) settings. This review article explores the influence of various nursing leadership styles on staff morale and patient outcomes in the ER. Effective leadership is essential for fostering a positive work environment, ensuring staff satisfaction, and ultimately impacting patient care quality. Different leadership styles, such as transformational, transactional, and servant leadership, can have varying effects on staff morale and patient outcomes in the ER. Understanding the relationship between nursing leadership styles and their impact on staff morale and patient outcomes is crucial for improving overall healthcare delivery in emergency settings.