Aim: Social anxiety is a prevalent concern during emerging adulthood and is often associated with heightened sensitivity to rejection and negative self-perceptions. This study examines the mediating role of body image in the relationship between rejection sensitivity and social anxiety among emerging adults. Materials and Methods: A total of 300 participants aged 18-29 completed measures assessing rejection sensitivity, body image, and social anxiety. Results: Findings suggest that individuals with high rejection sensitivity are more likely to experience negative body image, which in turn increases their levels of social anxiety. Body image emerged as a significant mediator, indicating that emerging adults who are more sensitive to social rejection may internalize these experiences as negative self-evaluations, particularly regarding their physical appearance. Conclusion: These findings highlight the importance of addressing body image concerns in interventions aimed at reducing social anxiety, particularly for individuals prone to rejection sensitivity. Understanding this mediation pathway may provide insights for developing more targeted approaches to support mental health during the transition to adulthood.