Abstract The quality of nursing services is one of the challenges of health systems and nurses are responsible for providing quality care to patients. The purpose of this research is to study the relationship between nurses' social responsibility and the quality of nursing delivered services in educational and treatment centers. This study used a descriptive and correlational method. Using stratified random sampling, from 15 December 2015 to 28 September 2016, 150 nurses and 450 patients were selected respectively. The research instruments included Carol Social Responsibility Questionnaire and modified version of SERVQUAL questionnaire. There was a direct relationship between the services delivered to patients and nurses' social responsibility (r= 0.45 and p= 0.04). The planners and nursing authorities take appropriate consideration to increase the quality of nursing services in terms of reliability, responsiveness, assurance, and empathy in order to increase the social responsibility of nurses. Keywords: Responsibility, Social responsibility, Quality of services, Nursing. Introduction Corporate social responsibility (CSR) is an essential part of the management of an organization. It is obvious that CSR describes an innovative and proactive approach; it may also be beneficial for the organization by ensuring bigger increase in productivity. 1 CSR defines an organization's social responsibilities as containing economic, legal, ethical, and altruistic responsibilities. Carroll's description of CSR reflects the fact that organizations with social responsibility have to make profits and conform to the law and ethics. 2 The CSR organizational field draws on the overarching sustainable progress norm, which encourages organizations to pay equal attention to their environmental, altruistic, social, and economic performance. 3 In nursing, there has been some deliberation to describe the quality of nursing care and the established professional principles for quality care. 4 The concentration on quality will offer competence and invention in care, focused on both prevention and cure (NHS 2005, Scottish government 2010a). 5 So, understanding and awareness of the factors contributing to the enhancement of the nursing care is critical to the development and promotion of the nursing services and client satisfaction. The purpose of this research is to study the relationship between nurses' social responsibility and the quality of nursing services in the educational and treatment centers of the Hamadan University of Medical Sciences in 2015. Methods and Results This descriptive and correlational research was conducted at educational health and treatment centers of Hamadan University of Medical Sciences, Iran, from 15 December 2015 to 28 September 2016. The population included all the nurses and hospitalized patients in the educational, health and treatment centers of Hamadan University of Medical Sciences. A sample of 150 nurses and 450 patients were selected, using stratified random sampling and simple random sampling respectively. The sample size of 150 nurses was determined, by the formula r = 0.25 (based on the significance level of correlation coefficient), the reliability of this test being 95% and the test power is 80%. By replacing these values, the minimum number of samples was 124 nurses and 3 patients were selected for each nurse. The number of sample nurses and patients assigned 20% of the total number of samples was added, because of the possibility of not returning the questionnaires. A total of 150 nurses and 450 patients were included in the sample. The inclusion criteria for nurses were: having at least two years of work experience, a bachelor's or higher degree in nursing, and a willingness to participate in this study. Inclusion criteria for patients were: more than 24 hours of hospitalization, and willingness to participate in the study. Vol. 69, No. 1, January 2019 99 SHORT REPORT Relationship between nurses' social responsibility and the quality of delivered nursing services to patients in Hamadan University of Medical Sciences, Iran Zahra Marzieh Hassanian, 1 Ali Bagheri, 2 Amir Sadeghi, 3 Abbas Moghimbegi 4 1 Chronic Disease (Home Care) Research Center, 3 Research Center for Maternal and Child Care, 4 Modeling of Non-communicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, 2 MSC Nurse, Imam Khomini Hospital, Ilam, Iran. Correspondence: Amir Sadeghi. Email: sadeghi1965@gmail.com