Introduction: Previous studies showed that one of the factors causing obesity is high consumption of high-calorie foods/drinks. Advertising is one of the supporting factors for the high level of consumption of a person. This study aims to examine the relationship between advertising and obesity in adolescents in the provinces of Bali, DIY and South Kalimantan.Methods: Quantitative research was conducted on 600 teenage respondents aged 16-18 years spread across rural and urban areas in three provinces. Univariate and bivariate SPSS analysis was performed to see the relationship between these two variables.