In this study, the effect of social media addiction on body perception in university students was investigated.169 university students aged 18-24 completed the Sociodemographic Data Form and Questionnaire, Social Media Addiction Scale (SMASS-AF), Social Appearance Anxiety Scale (SAAS) and Body-Cathexis Scale (BCS). According to the findings obtained in the research, social media addiction levels of the participants were found to be significantly higher those who spend more than 3 hours in social media and they tended to report higher scores on the SAAS and BCS scale. It was found that there was a positive and strong correlation between the results obtained from all scales, including SMAS-AF, SAAS, and BCS. Looking at the predictors of social media addiction, social media addiction seems to be a significant predictor of both social appearance anxiety (β=0,578, p=0,000). and body perception (β=0,359, p=0,008). Social media addiction which is frequently encountered in daily life, can become an important problem that can lead to a number of health problems It is thought that the findings obtained in the study social media addiction, social appearance anxiety and negative body image results were related to each other. Further researches can be done in the light of the findings.