The aim of this research was to determine the effects of Zumba fitness model of exercise on reduction of women body fat mass. 45 women aged 25-35 participated in the conducted research. The Zumba fitness program was estimated after eight weeks of exercise, total 24 training sections. The effects of applied Zumba fitness were analyzed by using Paired sample T test. The obtained result showed that Zumba fitness exercise achieved statistically significant improvement in body weight loss (p=.01), body mass index (p=.00), fat percentage (p=.01), fat mass (p=.00), right leg fat percentage (p=.01), left leg fat percentage (p=.00), right arm fat percentage (p=.02), left arm fat percentage (p=.00) and trunk fat percentage (.03). The study results clearly indicated that the Zumba fitness exercise can be used as effective group fitness exercise for total body fat mass reduction of women.