Željko Kalajdžić (Serbian Cyrillic: Жељко Калајџић; born 11 May 1978) is a Serbian football manager and former player. He is the current assistant manager of Bahraini club Al-Ahli.

• Željko Kalajdžić at BDFutbol
• Željko Kalajdžić at Soccerway
• Superleague Greece profile
• Željko Kalajdžić – K League stats at kleague.com (in Korean)