This chapter explains how HR executives can leverage social network understanding in order to facilitate post-merger integration. We describe two social network mechanisms (brokerage and contagion) and explain their effect on organizational functioning. We then present a framework incorporating interventions in three core areas of HR involvement in mergers and map those interventions on the timeline of the merger so as to provide a roadmap for developing and implementing interventions based on social network insight. We argue that an understanding of social networks and the proposed interventions would allow HR executives to better monitor and steer post-merger integration.