This study aimed to reveal the impact of strategic planning in enhancing competitive advantage, by conducting a field study on a number of small and medium enterprises in South Al Sharqiyah Governorate. The researcher used the descriptive approach to collect information, and the study was limited to a random sample, where (335) questionnaires were distributed from the study population. The data in the questionnaire were analyzed by using the statistical package for social sciences (spss). The study concluded with a number of results, the most important of which is that strategic planning in small and medium enterprises under study is relatively high.There is a statistically significant relationship between the dimensions of strategic planning and enhancing the competitive advantage of the small and medium enterprises under study. The appropriate plans to deal with it, that the vision and mission of the authority be consistent with the development and strategic plans of the country. Keywords: strategic management, strategic planning, competitive advantage, small and medium enterprises.