Supply chain management plays an important role in design, development, manufacturing, etc. and has key impact on company's overall environmental performance. Recently, green supply chain management has gained great interest from researchers and practitioners. Consideration has been given to consider environmental factors in entire supply chain starting from procurement, production, transportation, consumption, and post-disposal of products to make the whole product life cycle green. And those companies implementing ISO 14001 are controlling and minimizing risks not only internally but also externally with their suppliers. In this chapter, the authors are benchmarking sustainability performance of suppliers using ISO 14001 and rough set QFD. For this objective, firstly they identify the requirements for green supply chain planning on the basis of ISO 14001. Then, they evaluate the suppliers on the basis of these requirements using a QFD-based approach. To handle the uncertainties arising due to lack of or limited data, rough set theory is used. The results show that the proposed approach can effectively handle imprecise information and facilitates selection of green supply chain initiatives in a structured way.