A cross-sectional data from 2015 Oman Global School Student Health Survey (GSHS). the study analysed and included data from 1993 students aged 11-18 years. The statistical analysis was done by using SPSS version 25.0. The aim of this study is to show the prevalence of underweight, overweight and obesity of the Omani adolescents, also to analyse the association between their nutritional status and the mentioned health factors in the GSHS questions.