This study was undertaken to examine the impact of weight training on chosen health related physical fitness components of school going girls. For this purpose, 30 girls of 14-16 years were selected for experimentation. All the girls were equally and randomly assigned to:-(i) Weight training group; consists total 15 subjects (ii) Control group; consists total 15 subjects. Weight training group was allotted 10 weeks, 4 days per week, specific weight training programme. Control group did not underwent a specific training programme and they were advised to perform their daily routine tasks. (i) Dynamic Muscular Endurance & Strength (Arms and Shoulders) using Flexed arm hang (hold/sec) (ii) Muscular Endurance & Strength (Trunk) using Bent Knee Sit Ups (Number/min) and Cardiovascular Endurance using 12 min run/walk.To analyse the significant change (if any) between pre and post training scores, Paired t test was computed. To analyse the significant change (if any) between pre scores of weight training as well as control group and post training scores of weight training as well as control group Independent t test was computed. T-ratio, Mean and SD were computed and compared. The results indicate that weight training is effective to bring a significant impact on the selected health related physical fitness components i.e. Body Fat %, BMI, SMM, FFM, Flexibility, Muscular Endurance & Strength i.e. (i) Dynamic Muscular Strength & Muscular Endurance (Arms and Shoulders) (ii) Muscular Endurance & Strength (Trunk) and Cardiovascular Endurance. No significant changes were observed in TBW.