Transnational diasporan entrepreneurs are migrants and their descendants who establish entrepreneurial activities that span the national business environments of their countries of origin and countries of residence. We explore how business incubators contribute to the economic development of emerging markets by organizing their programs to bridge the institutional divides that transnational diaspora entrepreneurs face when establishing their multi-territorial ventures in these markets. Drawing on qualitative fieldwork conducted in the Netherlands during 2007, we present the case study of IntEnt, an incubator providing services exclusively to transnational diasporan entrepreneurs. We apply Bergek and Norrman's (2008) assessment framework to this case, examining IntEnt's goals, model (selection, business support, and mediation activities), and outcomes. Employing Eisenhardt's case-based theory development approach (1989), we then leverage case findings to generate theory about the institutional challenges faced by transnational diaspora entrepreneurs and the role that incubators can play in helping these entrepreneurs overcome these challenges.