Ahmad Lotfi - PhD candidate, department of industrial engineering, faculty of engineering, Bu-Ali Sina university, Hamedan, Iran
Parvaneh Samouei - Assistant professor, department of industrial engineering, faculty of engineering, Bu-Ali Sina University, Hamedan, Iran

As efficient instruments, there have been increasing studies on contract optimization in the supply chain field over the recent two decades. The lack of review papers is one of the gaps in contract optimization studies. Hence, the extant study aimed to provide researchers with an attitude to direct future studies on this topic. Therefore, the collected studies on contract optimization were reviewed and analyzed primarily. Then papers were classified based on the selected categories and themes. Finally, evaluation and results were presented based on the classified topics. They conducted studies, then achievements and limitations of the literature and future research opportunities were introduced to pave the way for researchers’ further studies.

Supply Chain Management, Contract Optimization, Game Theory, Bullwhip Effect