The role of the state in economic development is broad, old, and metamorphic. Drawing on historical political economy and a critical reading of new institutional scholarship, our understanding of the developmental state is contextual and complex. Successful developmental state formation is the result of stable political-economic environments, cultural legacies of earlier state-making functioning as mental maps for new statecraft, coherent institutional and policy entrepreneurship, and sustained growth that gives positive feedback in state-making. Latin American state developmentalism has always been diverse, before and after the debt crisis. In the era of state-led industrialization, the Latin American developmental state “failed” because, with domestic and regional markets small and dependence on foreign markets and financial capital high, macroeconomic policymaking did not learn to deal with crises and cyclical external conditions. Developmental state success in the 21st century depends on undertaking less volatile political-economic pathways to facilitate organizational learning by doing. In exclusionary Latin America more than in other corners of the world, developmental state success also means reconciling economic and social goals.