Background: Childhood obesity is increasingly being observed with the changing lifestyle. There are a few studies, reporting, prevalence of childhood and adolescent obesity and overweight from different parts of India that range from 3% to 29%, and also indicate that the prevalence is higher in urban than in rural areas. Hence; the present study was planned to assess correlation between overweight and dental caries among school children. Materials & methods: The present investigation included assessment of correlation between overweight and dental caries among school children. A total of 500 school going children between the age group of 9 to 14 years were included in the present study. Complete demographic and clinical data of all the subjects was obtained. For collecting the information, a predesigned proforma was used. Body weight, height and waist circumference of all the subjects was recorded and were divided into following categories: Underweight, Normal weight, Risk of overweight and overweight. All the results obtained were compiled and analyzed by SPSS software. Results: There were 120 normal weight males and 120 normal weight females. Overweight subjects had significantly higher DMFT/dmft score in comparison to normal weight subjects (P- value < 0.05). Conclusion: Overweight school children are associated with significantly higher prevalence of dental carries.