Mahnaz Hemmati Noedoust Gilani, Toraj Hassanzadeh Samarin, Hadi Ramzanipour sheshkal, Investigating the Effects of Spiritual Leadership on Organizational Citizenship Behavior with the Mediating Role of Spirituality in the Workplace (A Study on Public Hospitals of Guilan Province), International Business Management, Volume 10,Issue 27, 2016, Pages 6189-6193, ISSN 1993-5250, ibm.2016.6189.6193, (https://makhillpublications.co/view-article.php?doi=ibm.2016.6189.6193) Abstract: In the health service department of hospitals, organizational citizenship behavior has a specific position because it is responsible for taking care and preserving society healthiness, so these organizations have to apply different leadership methods which spiritual leadership and spirituality in the workplace is one of them to conquer their organizational challenges. In this regard, this research aimed to investigate the effects of spiritual leadership on organizational citizenship behavior with the mediating role of spirituality in the workplace and performed as a case study in the public hospitals of Guilan. This is an applied research and also a descriptive research from data gathering method perspective. Results confirm all of hypothesizes and indicate the mediating role of spirituality in the workplace in the impact of spiritual leadership on organizational citizenship behavior. Keywords: Spiritual leadership;organizational citizenship behavior;spirituality in the workplace;public hospitals of Guilan Province;Iran