This conceptual article aims to shed light on the significance of human spiritual dimension in the process of human resource development (HRD). It suggests spiritual intelligence as the missing link in the process of human development that should be identified and considered as an important factor for developed and morally qualified human resources. Moreover, this article also uncovered the growing interest of spiritual intelligence and its implications for HRD. The interest in spiritual intelligence in the body of knowledge has been (...) established in depth which assures that SI embedded in the fabric of the fields of organizational behaviour and psychology. The article emphasizes the vital influence of SI on bottom line of the organization, whereby, human resources can meaningfully contribute towards organization with improved performance. The conventional strategy of organizations in flourishing their employees is more on enhancement of individual’s knowledge, skills, abilities (Intelligence Quotient) and emotions control (Emotional Quotient). However, despite this immense interest in human capital, organizations tend to fail to have holistic approach of human resource development which eventually affects their performance. Further, the article indicates that without considering spiritual development of employees, the logic (IQ) and emotions (EQ) could not be the only ample source for human beings to perform utmost standard performances. Therefore, based on this, we conclude that the emerging notion of human spiritual quotient and its multi-dimensions must be included in HRD initiatives in order to have holistic mechanism. (shrink)