In this study, a total of 102 students in 5 courses(Electronic engineering, Civil engineering, Mechanical engineering, Chemical engineering and MBA) in the international branch of Amirkabir University, were asked to complete a SERVQUAL questionnaire. This questionnaire measured students' perceptions and expectations in five dimensions of service that consists of assurance, responsiveness, empathy, reliability and tangibles. The quality gap of university services was determined based on differences between students' perceptions and expectations. The results demonstrated that in all of the five SERVQUAL dimensions, there was a negative quality gap (p < 0.05). Also responsiveness was the most important dimension for the students but had the largest gap. So, improvements are necessary and university must pay more attention to the students requirements. There was limitation in this research because the current research was conducted among international branch of Amirkabir university. So, the results are limited to these faculty, not to the whole of the university. Also there were many questions in the questionnaire which makes the students tired and impatient. There are limited researches that consider service quality in the Iranian higher education. However, for the first time, the service quality of international branch of Amirkabir university was measured by the SERVQUAL in this research.