The concept of control has permeated various disciplines of public international law, most notable international criminal law, international humanitarian law, international human rights law and the law of statehood as well as the law of responsibility for states and international organizations. Often this notion of control has been used to extend the regular parameters in these disciplines to capture more extraordinary situations and apply the same rules originally developed within areas of law, such as the application of the laws of war to occupation, the rules of human rights treaties to extraterritorial situations or state responsibility to non-state actors. This article will examine this notion of control in all its facets in international law while also addressing some of its controversies and disagreements in the jurisprudence of international institutions, which have utilized this concept. The article will then provide an overview of its uses in international law as well as its overlap from one discipline to another with a view of providing some overarching observations and conclusions.