Contemporary politics is increasingly marked by the rise of global populism. Within this challenging context, lessons drawn from past experiences with populism—in which Latin America and Latin-Americanists have prominence—can provide a satisfactory response to many pressing questions concerning the foreign policies of today’s populist leaderships. This chapter explores possible patterns in the foreign policies formulations of Latin-American populist governments across three key periods: “classic populism” (1930s–1950s), “neoliberal neopopulism” (1980s–1990s), and “progressive neopopulism” (2000s–2020s). In recent years, a “fourth” wave of populism has gained increasing traction in the region. The Latin American experience offers a multi-dimensional case study for analyzing different populist eras within the same region and comparing, with notable variance across time and space, how populist governments have shaped their policies at regional, sub-regional, interregional, and global levels. The findings of this comparative study suggest that defining a coherent populist foreign policy in Latin America based on ideological or programmatic content is difficult. However, a clear pattern emerges: Latin American populists increasingly favor regional and global policies that bolster identity-based solidarities, thereby legitimizing their leadership both domestically and internationally. This chapter aims to contribute to a growing research program on populism and foreign policy in International Relations.