Survival of sport organizations in today's competitive world depends on their customer's satisfaction. The aim of this study was to determine customers' satisfaction in private and public body building clubs in north of Iran. In this descriptive study a questionnaire was provided to all subjects to determine demographic characteristics and satisfaction factors. A total of 390 sample, 175 men and 215 women were selected. The x 2 , independent t-test, mann-whitney U test and analysis of variance

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... ANOVA) were performed for comparing groups. There was significant difference between the overall customer satisfaction in private and public body building clubs (p=0.001), and also significant difference existed between the customer satisfaction from equipment, fee, accessibility factors and staff quality. So that regarding these factors customer satisfaction in private body building clubs was higher than public body building clubs, but no significant difference was observed between customer satisfaction from health and social and training programs factor in private and public body building clubs. Also, no significant difference in satisfaction factors between men and women was observed. Men's purpose and motivation to participate in the club were fitness and champion but the woman's goal of participating in clubs was health, weight control, peace building and socialization and the differences was statistically significant.