One of main factors that increases risk and likelihood of falling down among elderly people is weakness in balance and positive effect of some activities such as physical exercises has been reported in order to prevent it. This research has been conducted through meta-analysis method to evaluate value of effectiveness and to compare effect size of three intermediations of Pilates, exercise in water and yoga on improvement of dynamic balance in Iranian elderly population. For this purpose, results of 20 researches with 25 effect sizes were analyzed. Results indicated that all three exercises of intermediations of Pilates, exercise in water and yoga have been effective on dynamic balance of elderly people at the error level less than 0.05 and the combined effect sizes related to three intermediations of Pilates, exercise in water and yoga were respectively obtained 0.68, 0.73 and 0.50. Among three exercise methods based on the combined effect size, the most effective method to improve dynamic balance of elderly people was respectively specified Pilates, yoga and exercise in water. Considering findings from the research it can be concluded that all three intermediations of Pilates, exercise in water and yoga are effective on improvement of dynamic balance of elderly people but there is a significant difference in value of effectiveness in all three methods and according to the research Pilates exercise is more effective than exercise in water and yoga. Therefore, results and findings of the research can be utilized in prevention and treatment intermediations of problems related to balance of elderly people.