Background: This study was conducted to assess the Prevalence of deleterious oral habits in school going children. Material and methods: The research encompassed a sample size of 100 children between the ages of 11 and 13, who attended various government and private schools. These students were assessed for any harmful behaviours within the premises of their respective schools. The statistical analysis employed the Chi-square test. Results:It was observed that tongue thrusting and mouth breathing were the most common deleterious oral habits among the children. The prevalence of oral habits differed by sex, with 67% of females and 50% of males exhibiting such habits. Significant disparities were observed between males and females in relation to the behaviour of nail biting. Conclusion: The prevalence of oral habits among children aged 11 to 13 years was assessed, with tongue thrusting being the most common habit seen. This behavior showed minimal association with gender.