The article discusses how the study of institutions in organizations is gaining popularity in social science. It includes foundational works and recent writings by scholars in this field. The authors compare this approach to research in economics and political science, and place it within sociological theory. They highlight theoretical advances, address key uncertainties, and explore how institutional patterns relate to social structures. The studies cover various topics like mental health clinics and large corporations, showing how institutional theory can explain organizational changes. This volume is essential for those interested in sociology, culture, politics, and social change.