 Ontologically speaking, there are different kinds of entities that can be corrupted. These include human beings, words of a language, artefacts, such as computer discs, and so on. However, our concern in this entry is with the corruption of institutions since this is the main focus of the philosophical and, for that matter, the non-philosophical, literature. Of course, institutions are comprised in large part of institutional roles occupied by human beings. So our focus on institutional corruption brings with it a focus on the corruption of individual human beings. (I refer to the corruption of individual human beings as personal corruption.) However in the case of institutional corruption, the focus on the corruption of human beings (personal corruption) is on human beings qua institutional actors (and on those who interact with institutional role occupants qua institutional role occupants).