In this article I theorise the concept of misrecognition that we aim to bring to the study of international politics with this Special Issue. I draw upon three sources to do so: recognition theory, Hegel, and Jacques Lacan. I show that, while the seeds of an interest in misrecognition were laid in that interdisciplinary Hegelian scholarship known as recognition theory, it remains underdeveloped. To develop it into a concept I chart a path through recognition theory back to Hegel’s original dialectic of the master and servant in the Phenomenology of Spirit. What the dialectic captures, I argue, are the actual dynamics of misrecognition in social life, not an idealised form of recognition. This foundational, constitutive misrecognition is what Lacan also theorises by way of his concept of ‘fantasy’. Both Hegel and Lacan foreground a misrecognised, desiring subject that challenges the ways in which agency has been understood in international politics. Lastly, I show the purchase of a Hegelian-Lacanian analysis for IR by considering the relations between sovereignty and nuclear weapons under the lens of fantasy.