Main Staff of the National Liberation Army and Partisan Detachments of Serbia

The Main Staff of the National Liberation Army and Partisan Detachments of Serbia was the highest military organ that organized and commanded the units of the Yugoslav Partisans (the "National Liberation Army") on the territory of German-occupied Serbia (central Serbia) during World War II (1941–45).

Established on 4 July 1941 in Belgrade by the Provincial Committee for Serbia (PKS), the following were appointed members of staff: Sreten Žujović as commander (komandant), Nikola Grulović, Filip Kljajić, Branko Krsmanović and Rodoljub Čolaković as members of staff. All staff members left Belgrade on 8 July and entered the territories of Šumadija and Pomoravlje, while PKS stayed in Belgrade. The emergance of the Main Staff was very important for the directing of the Partisan Detachments and District Committees of the Communist Party of Yugoslavia.