A large number of studies have investigated body image and appearance-related social comparisons among college students and adolescents. However, there is no adolescent-specific instrument for measurement of body and appearance satisfaction within social context. The present study aimed to develop and validate Adolescent Comparative Body and Appearance Satisfaction Scale (ACBASS). Three studies (n = 938) were conducted to investigate validity and reliability of the scale. Finally, a 20-item scale with 4 components (physical fitness, facial appearance, physical health, and body strength) was resulted with adequate psychometric properties. This newly developed scale may be used in clinical and research settings among adolescents.