The purposes of this study were to 1) develop a training curriculum for the promotion of transformation leadership for directors of Tambol health promotion hospitals, 2) proceed the try out of the training curriculum for the promotion of transformational leadership for directors of Tambol health promotion hospitals, and 3) evaluate the training curriculum for the promotion of transformation leadership for directors of Tambol health promotion hospitals. The samples of the study consisted of 30 directors of Tambol health promotion hospitals under supervision Chachoengsao Provincial Public Health Office. The instruments used in this study were test forms for knowledge evaluation on transformation leadership, attitude test forms on transformation leadership, skill evaluation forms on transformation leadership. Data analysis was implemented by percentage, mean, standard deviation, dependent t-test, and data synthesis from content.
             The results of the study were as follows:
             1. There were 3 steps in the development of training curriculum for the promotion of transformational leadership for directors of Tambol health promotion hospitals i.e. the study on needs for the promotion of transformation leadership, issuing curriculum structure, and curriculum evaluation.
             2. The try-out results of training curriculum for the promotion of transformational leadership for directors of Tambol health promotion hospitals revealed that:
	   	2.1 Knowledge on transformational leadership for directors of Tambol health promotion hospitals, before the training and after the training, was statistically significant different at the .05 level.
	   	2.2 Attitudes on transformational leadership for directors of Tambol health promotion hospitals, before the training were at moderate level, and after the training were at maximum level.
	  	2.3 Skills on transformational leadership for directors of Tambol health promotion hospitals, before the training were at moderate level, and after the training were at maximum level.
             3. The evaluation of the curriculum for the promotion of transformational leadership for directors of Tambol health promotion hospitals indicated that:
       	  	3.1 The efficiency of the training curriculum for the promotion of transformational leadership for directors of Tambol health promotion hospitals was higher than the fixed criteria 80/80.
	   	3.2 Behavioral characteristics in working or management, according to 4 specific factors of full form of transformational leadership, had changed in better directions             
