Police officer misconduct is a critical issue facing police departments across the world. Police officers are entrusted with authority to enforce the law, including the power to use physical force, so they can protect society from crime and violence. Police abuse of their authority represents a fundamental threat both to human rights and the democratic rule of law. Cases of perceived misconduct can reduce community trust and confidence in the legitimacy of police (Weitzer, 2002), which in turn can impact legal compliance (Fagan & Tyler, 2005) and community co-operation (Murphy, Hinds, & Fleming, 2008). More specifically, police abuse of process can lead to miscarriages of justice (Ransley, 2002), as well as have lethal consequences for citizens (IPCC, 2011; Miller et al., 2017; Porter, 2013). This article begins by discussing definitions of police misconduct, and terminology used in its study, to shed light on what police misconduct is. It then moves to an overview of what types of actions are considered to be misconduct and a presentation of some research on misconduct typologies. A discussion then follows of how forms of misconduct may vary in severity, which is a diverse construct. Finally, the article considers what happens to officers who are found to have engaged in misconduct, highlighting some of the contemporary issues of police disciplinary processes.