The exercise is on the topic: “Decision making using Operations Research in Sustainable Partner Selection for a potential collaboration”. Supply chain management is one of the hottest topics of today. A lot of research is being done in this field. Operations research has a major role to play in this field. Collaboration, strategic alliances and joint ventures are one of the most important concepts. But the question is: How do we choose a partner? How do we choose a supplier? This is a very important consideration for a successful collaborative partnership, given the fact that there are a lot of people or companies in the market and in the same field too. Thus, we need to have some basic methodologies for partner selection and supplier selection problems. Today, ‘Sustainability’ is the new buzz word. The world economy is moving towards sustainable development. In this context, sustainable partner selection methodologies has become very important. But, there are a lot of risks involved in these procedures (in both traditional and sustainable processes). This is exactly where Operations Research (OR) comes into play. This gives us a proper methodology to analyse various parameters involved in a given process. On the basis of the analysis using techniques of operations research, we can weigh on the various parameters and finally come to a decision or a solution to the various problems as cited above. In this whole exercise, we have done a thorough literature review on the above mentioned topics. We have given some standard definitions to the various terms. And then we have mentioned various criteria of the problems as mentioned above. Further, the methodologies make the involvement of Operations Research in the decision making procedure more visible. And finally, we have concluded with our observations from the exercise.>