This study aims to clarify the concept of transformational leadership and its fundamental dimensions, to identify the nature of human behavior in security organizations, to analyze the relationship between transformational leadership and modifying human behavior, and to identify the impact of transformational leadership on increasing the effectiveness of security organizations. Transformational leadership has a clear impact on improving organizational performance and is one of the most important means of achieving success, growth, and enhanced organizational performance. The researcher used the descriptive-analytical method, which is suitable for this study. This method focuses on understanding, analyzing, and conceptualizing theoretical concepts, and then linking them to practical reality through observation of the phenomenon to arrive at scientific results that benefit security organizations in raising their performance levels. Among the most important findings of this study are the following: 1- Transformational leadership is an effective leadership style that contributes to modifying human behavior through ideal influence, inspirational motivation, intellectual stimulation, and individual consideration. 2- There is a positive relationship between transformational leadership and the level of job satisfaction and commitment in security organizations. 3- Transformational leadership reduces negative behaviors such as resistance to change, poor discipline, and burnout. 4- There is a knowledge gap in Arab studies on the relationship between transformational leadership and human behavior in security institutions compared to foreign studies. 5-The security environment requires specific leadership practices that balance discipline with attention to the human aspects of employees. The most important recommendations are as follows: 1- Strengthen leadership training programs in security organizations to equip leaders with transformational leadership skills. 2- Integrate transformational leadership concepts into policies and organizational regulations to ensure the development of positive employee behavior. 3- Conduct applied field studies on the impact of transformational leadership on modifying human behavior within Arab security agencies. 4- Attend to the psychological well-being of employees by adopting strategies for psychological support and career guidance. 5- Identify best leadership practices that can be applied in security organizations to enhance performance and commitment.. 6- Encourage security leaders to practice individual consideration and appreciate employee efforts, which enhances job satisfaction and organizational belonging. Keywords: Transformational leadership, security organizations, human behavior.