The objective of this special issue is to advance our understanding of the role of leadership at all levels of organizational hierarchies in promoting effective human resource management (HRM) in the broadly defined Asia Pacific region. Leadership and HRM are two key factors affecting outcomes at organizational, team/unit, and individual levels either within the same country or in a cross-border context (Boada-Cuerva, Trullen, and Valverde 2019; Chang 2016; McClean and Collins 2019; Steffensen et al. 2019). However, the development of the two fields to date has largely occurred in parallel (Vermeeren, Kuipers, and Steijn 2014), thus not capturing the full range of potential benefits and insights to be gained from analyses drawing on both fields and creating an urgent need to integrate research on leadership and HRM in various contexts (Boada-Cuerva, Trullen, and Valverde 2019; McClean and Collins 2019; Steffensen et al. 2019). More particularly on the urgent need for integrating leadership and HRM research, we note first that focusing on either leadership or HRM alone fails to explain most of the variance in resultant outcomes in key studies in the extant literature (Jiang et al. 2012; Podsakoff, MacKenzie, & Bommer 1996; Tzabbar, Tzafrir, and Baruch 2017). For example, because leadership and HRM may be correlated with each other (Chang 2016; McClean and Collins 2019) and may both affect organizational, team and individual outcomes (Steffensen et al. 2019), it is important that they can be examined simultaneously to minimize omitted variable bias when estimating their impacts. Furthermore, leadership and HRM may interact with each other when shaping various outcomes, complementing or substituting each other's impact. Several recent studies have started to investigate such interactions (