This article engages with trans‐theorizing to show how International Relations (IR) is currently blind to gender diversity, and the conceptual contributions trans‐theorizing could make. To do so, it asks what insights trans‐theorizing might provide for the study of global politics generally, and for feminist theorizing about gender in global politics specifically. After briefly introducing the terminology of trans‐theorizing, the article addresses the potential for (and potential hazards of) an alliance between trans‐theorizing and feminist theorizing in IR. The article then discusses several potential contributions of trans‐theorizing—including hyper‐ and in‐visibility, liminality, crossing, and disidentification—which provide explanatory leverage for IR. The article concludes with some suggestions for further collaboration between trans‐theorizing and (feminist) IR to deepen and widen IR's work on gender specifically, and global politics generally.