Radovan Karadžić (Serbian: Радован Караџић, pronounced ; born June 19, 1945(1945-06-19)) is a former Bosnian Serb politician. He is currently on trial in the United Nations Detention Unit of Scheveningen accused of war crimes committed against Bosnian Muslims, Bosnian Croats, and other non-Serbs during the Siege of Sarajevo. He is also accused of the Srebrenica genocide.

Educated as a psychiatrist, he co-founded the Serbian Democratic Party in Bosnia and Herzegovina and was the first President of Republika Srpska from 1992 to 1996.

He was a fugitive from 1996 until July 2008 after having been indicted for war crimes by the International Criminal Tribunal for the former Yugoslavia (ICTY). The indictment concluded there were reasonable grounds for believing he committed war crimes including genocide, against Bosnian Muslim and Bosnian Croat civilians during the Bosnian War (1992–1995). While a fugitive he worked at a private clinic in Belgrade specialising in alternative medicine and psychology under the alias Dr. Dragan David Dabić (Др Драган Давид Дабић) under the company name of “Human Quantum Energy”. His nephew, Dragan Karadžić, has claimed in an interview to the Corriere della Sera that Radovan Karadžić attended football matches of Serie A and that he visited Venice under the false identity of Petar Glumac.