This study aims to investigate the impact of Emotional Intelligence on the leadership competencies development of employees within Jordanian industrial companies listed at the Amman Stock Exchange. The study population consists of employees working at these companies. A simple random sampling technique was used to select the respondents surveyed with a total of 154 questionnaires administered to the chosen respondents. Statistical tools were used to test the hypothesis. The findings of this study indicate that there is a significant positive impact of emotional intelligence (self-awareness, self-regulation, motivation, empathy, and social skill) on leadership competencies development; the study also shows that the most influential dimensions of emotional intelligence is motivation. Key Words: Emotional Intelligence, Development, Leadership Competencies, Employees, Jordan.