The papers in this special issue critique and expand Kerlin's (2013) macro-institutional framework for conceptualizing social enterprise to better capture the nuances and dynamic nature of social enterprise country models. Social enterprises, though spanning the boundaries between the nonprofit and business sectors in their immediate organizations, are also shaped by sector-spanning macro-level institutions in their different contexts. The five papers in this issue offer quantitative and qualitative studies that identify differing norms, pressures, and logics of these institutions in different settings. These insights reinforce and inform an expansion of Kerlin's (2013) macro-institutional framework that leads to a more accurate understanding of social enterprise formation and operation in various country contexts and thus improved practical guidance for the support, development, and transfer of social enterprise.