Organizational engagement has only recently gained traction in research literature despite engagement being considered as a multidimensional construct encompassing engagement with the work, job or the organization. Organizational engagement of Millennials is crucial for organizational success today given that Millennials are the largest generational cohort in contemporary workforces and they are expected to lead the transformation of organizations at the onset of Fourth Industrial Revolution or Industry 4.0. Novel theoretical approaches that are applied in the case of employee or work engagement, such as the social identity perspective, appear to have been ignored in the case of organizational engagement. This article aims to present a narrative review of extant research literature on organizational engagement of Millennials relating to the theories and frameworks of engagement, and thereby to identify knowledge gaps and recommend future research directions and theoretical perspectives that may help fill these gaps. The literature review was conducted using Google Scholar, Emerald Insight, Research Gate and JSTOR and considered published empirical studies incorporating quantitative methods.