The purpose of the current study was to examine the effect of high intensity functional training on ‎anaerobic power and fatigue of overweight women. In this semi-experimental study, with a pre-test-‎post-test design, among overweight women in Isfahan, 30 overweight women who worked in Arsen ‎Club were selected by random access and randomly divided into two groups of exercises: high ‎intensity functional training and control. In the pre-test phase, measurements of height, weight and ‎anaerobic power were performed at 8 to 10 o’clock in the morning in the club gym. Then, the ‎intervention phase began. The intervention phase was performed in eight weeks and three sessions ‎per week in the club gym, where the training groups performed the desired exercise. During this ‎time, the control group resumed their daily activities. Finally, 48 hours after the end of the training ‎phase, in the post-test phase, the desired measurements were performed again. Data were analyzed ‎by covariance test. The results showed that high intensity functional training in increasing anaerobic ‎power (peak, mean and minimum anaerobic power), and decrease in fatigue index have a ‎significant effect (p≤0.05) and the results show a significant improvement of these indicators due to ‎HIFT exercises (p≤0.05). In general, the results of the present study emphasize the importance of ‎HIFT training on anaerobic power and fatigue of overweight women. According to the results of the ‎present study, it is suggested that trainers use high intensity functional training to improve anaerobic ‎power and fatigue of overweight women.‎