Background and aim: The satisfaction of users is the dynamic and main purpose of each organization. This study aimed at determining the level of clients' satisfaction of library services in Medical Sciences University of Babol.

Material and methods: This analytical and survey study was conducted on 245 users who referred to the libraries of Medical Sciences University of Babol and they were regularly and randomly selected. The data were collected and analyzed by using a researcher-made questionnaire and T-test and ANOVA at a significance level of 0/05, respectively.

Findings: The mean of total scores of users' satisfaction of library services was 3/77 ± 0/66 which was significantly higher than average in Medical Sciences University of Babol (Sig<0.05). Amirkola library with an average of 54/0 ± 48/4 and Zahravi library with an average of 54/0 ± 48/4 among 8 libraries had the highest and lowest satisfaction, respectively. The highest (4/35) and lowest (3/10) level of satisfaction belonged to human and library equipment, respectively, too. The results of ANOVA indicated that the average of users' satisfaction had significant difference (Sig<0.05) with each other in different aspects of all studied libraries.

Conclusion: The clients' satisfaction of library services in Medical Sciences University of Babol was higher than average in all aspects.