The rise of social media has revolutionized celebrity culture, enabling unprecedented interactions between celebrities and their fans while exposing them to cyberbullying characterized by electronic intimidation and threats. This study investigates the extent and impact of cyberbullying on the self-esteem of Nigerian celebrities, examining different forms of online harassment and their coping strategies. Despite the prevalence of cyberbullying, there is a significant research gap focusing on Nigerian public figures. Utilizing a quantitative research approach, this study involves surveys and structured interviews with Nigerian celebrities from various fields. Key findings indicate that cyberbullying significantly impacts their mental health and self-esteem, leading to anxiety, depression, and a decline in self-worth. Different forms of cyberbullying, such as harassment, impersonation, and hate speech, have distinct effects, prompting celebrities to seek social support and engage in self-care activities to mitigate these negative impacts. The research underscores the urgent need for targeted interventions and support systems to protect celebrities and promote a healthier online environment, contributing to broader discussions on digital ethics and responsibility.