SummaryBackground and objectives: Many individuals, especially the young, are concerned about their body image and devote much time to thinking about changes in their appearance. Most studies on the effect of educational programs on body image have focused on the treatment of negative body image, but few have evaluated their effect on the prevention of negative body image developing and its improvement in the general population. The present study examined the effect of a self-efficacy theory-based educational program on body image concerns and self-esteem among high school female students in Shiraz, Iran.