ABSTRACT: Background: The present study was conducted to assess malocclusion and orthodontic treatment need among 13 to 15 years old school going children of Andaman and Nicobar islands. Materials & Methods: 126 school children age ranged 13-15 years of both genders was involved. Orthodontic treatment needs was calculated using Dental esthetic index (DAI). Results: 13 years had 48 males and 52 females, 14 years had 72 males and 140 females and 15 years had 80 males and 112 females. DAI score <25 was seen in 40 males and 72 females, 26-20 in 56 males and 80 females, 31-35 in 44 males and 96 females and >36 in 60 males and 56 females. The difference was non- significant (P> 0.05). Conclusion: Maximum patients had severe malocclusion with dental esthetic index 31-35.