The sociologies of quantification, university rankings, and infrastructure are a loosely connected set of scholarly endeavors. Research in these areas typically examines production of certain types of quantification, their effects, and institutionalization. Despite these commonalities, scholars have noted a lack of conceptual coherence, debates on how to study quantification, a need to examine their socio-epistemological prerequisites, and research that crosses organization and national boundaries. In this paper, I argue that institutional ethnography—an alternative sociology for people—provides a unifying ontology for the sociology of quantification and studies of rankings and metrics in higher education. Institutional ethnography examines socio-epistemological prerequisites of quantification and facilitates a collaborative transnational project due to its focus on the extra local coordination of action. I also share results of the first transnational institutional ethnography of university rankings and related metrics, demonstrating coordinated action across several junctures of what has been called a global university ranking surveillance assemblage.