Abstract
Board interlock represents a phenomenon where organizations are connected via overlapping board members and executives. Board interlock is an important area of research in governance study because of its potential to impact governance outcomes through the flow of information, resources, and status. Despite its potential significance, the role of board interlock in governance has not been explicitly discussed in the nonprofit board governance literature. I review and synthesize corporate and nonprofit board governance literature and link this literature to the study of board interlock. Then, I review the extant literature on the antecedents and consequences of board interlock. I conclude by identifying gaps in the literature and proposing directions for future research.