Ratko Mladić (Serbian: Ратко Младић, pronounced ), born March 12, 1942, was the Chief of Staff of the Army of the Republika Srpska (the Bosnian Serb Army) during the Bosnian War of 1992-1995 and is now a fugitive.

Mladić was recognized as the top military general by the International Criminal Tribunal for the former Yugoslavia in The Hague in connection with the 1992-1995 Siege of Sarajevo and the Srebrenica massacre.

There has been an outstanding international arrest warrant against Mladić following the Rule 61 of ICTY which concluded that there are reasonable grounds for believing that he has committed the crimes in question, including genocide. The United States government had offered a $5 million reward for his arrest. On October 11, 2007, the Serbian government had announced that €1 million would be rewarded for information which would lead to Mladić's capture and arrest.