ABSTRACT. Recent advances in land system science and in institutional analysis provide complementary, but still largely disconnected perspectives on land use change, governance, and sustainability in social-ecological systems, which are interconnected across distance. In this paper we bring together the emerging concept of telecoupled land systems and the established concept of polycentric governance to support the analysis and the development of sustainable land governance in interconnected social-ecological systems. We operationalize the two concepts by analyzing networks of action situations in which interactions between proximate and distant actors as well as socioeconomic and ecological processes cause land use change and affect the sustainability of land systems. To illustrate this integrated approach empirically, we analyze a case of transnational biofuel investment in Sierra Leone. We identify the characteristics of, and activities in, networks of action situations that affect the sustainability of land systems related to this case. Integration of the two concepts of telecoupled land systems and polycentric governance enables analysts to identify interactions in polycentric governance systems (1) as drivers of telecoupled sustainability problems and (2) as transformative approaches to such problems. The method provides one way for linking place-based analysis of land change with process-based analysis of land governance.