The aim of this study was to investigate the effect of a body image group counselling program on adolescent girls in the context of Positive Psychology and Positive Psychotherapy. The sample set consisted of 22 female students, 11 in the experimental group and the other 11 in the control group, and they are all in the 9th grade and have negative body images. Research was conducted based on a pattern of a pre-test, post-test and follow-up test with control and experimental groups. A Body Image Scale, Body Image Coping Strategies Inventory and Program Evaluation Form were used as data collection tools. The positive body image group counselling program was conducted on the experimental group for ten sessions. The Wilcoxon sign rank test, Mann-Whitney U test and repeated-measure of analysis of variance (ANOVA) were used for data analysis. According to the results, the program was statistically significant. Additionally, the results revealed statistically significant increases in positive body images and coping strategies in the intervention group when compared with the control group. The program may be used to increase positive body image.