This chapter redescribes the rather oblique theorizations of the corporation in public international law, by first outlining some generic characterizations of the corporation in international legal writing, before turning to two areas of international legal doctrine, practice, and scholarly work: international investment law and international human rights. In both of these areas, the corporation has often been identified with potential dysfunction within, or subtraction from, the international legal order. International legal engagement of the corporation has, accordingly, been identified with the discipline’s corrective realignment, rejuvenation or augmentation. So figured, the corporation has been central to the maintenance of prospects of, and aspirations for, ‘governance fusion’ on the global plane. Precisely because of the paragnostic way it has been known to international law, the corporation has been a pivotal figure in international legal knowledge practice.