The purposes of this study were to study the transformational leadership, the school based management and the relationship between transformational leadership and school based management of the school administrator under Sakaeo Provincial  Administrative Organization.     
	The samples for the study were 156 administrators and teachers from Sakaeo Provincial Administrative Organization. The instruments consisted of the questionnaires in 5 rating scales, which had the reliability of .98. The statistic for analysis of data were mean, standard deviation and Pearson product moment correlation.
	The result showed that the school administrators had mainly transformational leadership in the high level which were inspiration motivation, intellectual stimulation, charisma and individualized consideration. The school based management was in the high level which were decentralization, self-management, check and balance, return power to people and participation. An analysis showed that the correlation between transformational leadership and school based management of the school administrators in the positive way with statistically significant difference at the level of .05
