ObjectiveThe COVID-19 pandemic has increased attention to the proliferation of pediatric obesity amidst significant changes in weight-related health functioning (e.g., compromised physical activity, limited food access, increased stress). The present cross-sectional study investigated adolescents’ feelings about their bodies and perceived changes in weight stigma from peers, parents, and social media during the pandemic.MethodsFour hundred fifty-two adolescents (11–17 years old) completed an online survey during the Fall of 2020. Measures assessed perceived changes in exposure to weight stigmatizing social media content (stress eating jokes, weight gain memes) and experiences of weight stigma (weight-based bullying, teasing, hurtful comments) by parents and peers, as well as body dissatisfaction, during the COVID-19 pandemic. Weight status and gender were examined as individual difference variables.ResultsThe majority (53%) of adolescents reported increased exposure to at least one form of weight stigmatizing social media content during the pandemic. Additionally, pandemic-related increases in body dissatisfaction were prevalent (41%), especially among girls with higher body mass index (≥85th percentile; 67%). On average, the extent to which adolescents experienced weight-based mistreatment from parents and peers remained consistent with their pre-pandemic experiences.ConclusionsOverall, these findings highlight changes in the social messages that adolescents receive about their bodies, as well as their subjective body satisfaction, during the pandemic. Results underscore the need for healthcare providers and mental health professionals to be aware of the potential rise in weight stigma during the pandemic, and encourage families and schools to engage in supportive, rather than stigmatizing, weight-related communication with youth.