The research is aimed at testing the relationship between lean leadership as an independent variable through its dimensions (1) culture of continuous improvement, (2) self-development, (3) scientific qualifications, (4) Gemba, and (5) Hoshin Kanri, and competitive success as a dependent variable through its dimensions (1) level of product and service quality, (2) organizational management, and use of resources, (3) strengthening of corporate culture, (4) application of knowledge and use of ICT, and (5) knowledge and experience of the market. A group of smart phone marketing outlets in Alnajaf Alashraf governorate has been chosen as a spatial domain to conduct the study due to its importance to the governorate. The research included two hypothesis for testing correlation and influence. The research population has mounted (380) workers, from which a sample of (193) has been selected according to sample size table style accredited to (Krejcie & Morgan,1970:608). The data was processed by (Spss .v. 23). The research concluded that success in employing some of the dimensions of lean leadership helps the organization achieve many advantages that help it in employing its strengths to encounter external challenges, which will positively be reflected in improving its competitive positioning, which is the first step towards achieving the competitive success that most of contemporary business organizations seek to achieve.