Background: Determining the gap in the quality of educational services, followed by the adoption of appropriate strategies for eliminating or reducing the existing obstacles, is considered the first basic step in developing quality improvement programs for universities. Therefore, this study was conducted to evaluate the quality of educational services of Iranian medical universities.Methods: This study was a systematic review and a meta-analysis based on the SERVQUAL evaluation pattern, and data collection was done through accessing published articles in reputable academic websites inside and outside Iran including and searching 4 keywords “the quality of educational services, SERVQUAL Evaluation Model, educational service gap, and Iran” without time and language restrictions. The CMA software, version 2.2.064, was used for data analysis.Results: There was a negative gap in all 5 dimensions. The average gap in all the dimensions was -1.335 out of the maximum 5 (responsiveness=-1.463, assurance=-1.367, tangibility=-1.364, empathy=-1.297, and reliability=-1.091).Conclusion: Based on the results of this study, it can be claimed that students are not satisfied with the current state of the quality of the educational services provided, and we are far away from achieving the ideal state and wining their full satisfaction. The differences observed among the 5 dimensions of the quality of educational services can be used as a guide for planning and allocating resources. Iranian medical science universities should try to pay their most attention to the dimensions that have the widest gaps and place them at the top of their priorities.