Obesity has been rising sharply worldwide in recent years. This epidemic problem not only occurs among adults, but also becomes more serious in children and adolescents. Objective(s): The purposes of the study to determine the prevalence of overweight and obesity among adolescents aged 12-14 years in secondary schools in AL-Nasiriyah city, Iraq. Methodology: A descriptive (Cross sectional) study was conducted on students' at Secondary Schools in AL-Nasiriyah City between the periods of 16

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... r 2016 to 20 April 2017. In a cluster random sample from 12 secondary school the number of student's early adolescent in these 12 schools was 1500 students aged 12-14 years, 746 males and 754 females. The data were analyzed through the application of descriptive statistic frequency, percentage, and the application of inferential statistical procedures, which include correlation coefficient. Results: The results of the study indicated the prevalence in obesity and overweight in early adolescence in 12 schools in the Nasiriyah city was (13.4%) among the students, and we found that the proportion of obesity in girls 57% slightly more in boys 43%, and the most prevalent category where the proportion of obesity is at the age of 14 years 45.7% and we found that the rate of obesity in grades high in the first grade average 55.5%. Conclusion: The results of the study indicated that there is a high significant relationship between obese students and their general information which include (gender and age), while there is no significant relationship between obese students and class. Recommendations: Increase community awareness about the risks of epidemic of obesity among school children age.