Dušan Kljajic (Serbian Cyrillic: ????? ??????, born 12 October 1963) is a retired Serbian football defender.
A product of Red Star football academy, during his professional career he played for numerous clubs in Yugoslav First League and Yugoslav Second League.
After the break-up of Yugoslavia, he moved to Turkey, where he played for Samsunspor, before returning to Serbia in 1994.
Since retiring as a player in 2000, Kljajic worked as a manager with several Serbian clubs, including Mladenovac, Big Bull, Morava Cuprija, Srem and Novi Pazar.