The aim of the study was to identify the degree of transformational leadership practice among the principals of public schools in Oman and its relationship to empowering the intellectual capital of its employee. To achieve the goal of the study, the researcher followed the quantitative descriptive approach and two tools were designed for the study. The first tool is a transformational leadership questionnaire. The second questionnaire measures the level of empowerment of intellectual capital. The study tools consisted of (81) items. Their validity and reliability were found and the study population is made up of (19057) teachers and administrators of public schools from the governorates of Ash Sharqiyah North and Al Batinah South and Dhofar. The sample of the study was selected in the random cluster model and consisted of (553) administrator and teacher from the study community. The results showed that the degree of transformational leadership practice among school principals was" high "with an average of (4.12). The results revealed statistically significant differences at the level of significance (α=0.05) attributable to the gender variable in favor of females and the variable of educational governorates in favor of the Al Batinah South and the absence of statistically significant differences attributable to the variable of the job title .The level of intellectual capital empowerment was high ,with a statistically positive direct correlation between the degree of transformational leadership and the empowerment of intellectual capital. Based on these findings ,the researcher recommends to strengthening the use of the school's transformational leadership style in schools, to determine the current and future needs to ensure intellectual capital investment.