Background: Clinical nurse managers are leaders who serve as guides for registered nurses on their wards. To do their duties, they must promote the growth of mindset, adhere to a code of ethics, be open, transparent, and honest in their interactions, be genuine, and instill a work culture of personal growth, clarity, accountability, and innovation. Authentic leadership and mindfulness practices if combined together create nurse managers who have clearer, more focused thinking, and a growth mindset that helps subordinates improve and grow. Aim: The present study aims to; assess authentic leadership, mindfulness, and managerial competencies levels among nurse managers in hospital. Subjects and Method: Design: a descriptive design was used. Settings: the study conducted at Shirbeen Hospital. Subjects: consisted of 70 nurse managers and 226 nurses. Tools: The Three tools used for data collection consisted of; Authentic Leadership Questionnaire, Five Facet Mindfulness Questionnaire, and the Management Competencies Questionnaire. The Results: the current study revealed that 44.3% of nurse managers had low authentic leadership, 42.9% of them had low levels of mindfulness, and 74.3% of them had low managerial competencies. There was a statistically significant relation (P=0.001) between authentic leadership, mindfulness, and managerial competencies levels among the studied nurse managers. Conclusion: the studied nurse managers had low levels of authentic leadership, mindfulness, and managerial competencies. Recommendations: Conduct an educational program for nurse managers to improve their authentic leadership, mindfulness, and managerial competencies.