The move to end impunity for human rights atrocities has seen the creation of international and hybrid tribunals and increased prosecutions in domestic courts. The Oxford Companion to International Criminal Justice is the first major reference work to provide a complete overview of this emerging field. Its nearly 1100 pages are divided into three sections. In the first part, 21 essays by leading thinkers offer a comprehensive survey of issues and debates surrounding international humanitarian law, international criminal law, and their enforcement. The second part is arranged alphabetically, containing 320 entries on doctrines, procedures, institutions and personalities. The final part contains over 400 case summaries on different trials from international and domestic courts dealing with warcrimes, crimes against humanity, genocide, torture, and terrorism. With analysis and commentary on every aspect of international criminal justice, this Companion is designed to be the first port of call for scholars and practitioners interested in current developments in international justice.