Focusing on the social construction and social positioning of organizations and the individuals who form them, institutionalism has captivated recent generations of public administration scholars. The framework has various strands developing sets of assumptions that guide empirical work and nuanced theoretical development. With most of the recent theoretical developments of the field fitting within the tent of institutionalism, it is difficult to present a standardized set of assumptions for the framework. However, the focus on social norms, rules, and roles and how these frame public organizations and the behavior of public officials, is at the core of all institutional approaches. In this chapter, we trace the development of institutionalism within the field, making note of current debates and trends. We challenge scholars to recognize the normative characteristics of institutionalism and the ways in which racialized and gendered assumptions become central to much of the early theoretical development of the field.