Veliki Trnovac is a village in the municipality of Bujanovac, Serbia. According to the 2002 census, the village had a population of 6,762. Of these, 6,730 (99,52%) were ethnic Albanians, 1 (0,01%) Bulgarian, 1 (0,01%) Bosniak, and 12 (0,17%) others.

The Insurgency in the Preševo Valley was an approximately two year-long armed conflict between 1999 and 2001, between the Federal Republic of Yugoslavia and the ethnic Albanian separatists of the Liberation Army of Preševo, Medveđa and Bujanovac (UÇPMB). There were instances during the conflict in which the Yugoslav government requested KFOR support in suppressing UÇPMB attacks since they could only use lightly armed military forces as part of the Kumanovo Treaty that ended the Kosovo War, which created a buffer zone between FR Yugoslavia and Kosovo.