The main purpose of the supply chain system is to make profit and meet customers' expectations simultaneously. Therefore supplier evaluation and selection is a significant strategic decision for reducing operating costs and improving organizational competitiveness to develop business opportunities. Moreover, with increasing concern towards environmental protection and sustainable development, it becomes important to pay more attention to environmental requirements and evaluating the potential suppliers by incorporating green factors into the selection process. Therefore Selected suppliers should take the "voice" of customers into account by providing the company's requests. In this context, the aim of this paper is to put forward an integrated approach for green supplier selection by considering various environmental performance requirements and criteria. The proposed approach addresses the inter-relationships between the customer requirements (CRs) with the aid of decision-making trial and evaluation laboratory (DEMATEL) method while constructing a relationship structure. Quality function deployment (QFD) model is used to establish a central relationship matrix in order to identify degree of relationship between each pair of supplier selection criteria and CRs. Afterwards, interval type-2 fuzzy analytic hierarchy process (IT2 FAHP) applied to prioritize and rank the alternative suppliers. At the ende a case study is presented to reveal the potentiality and aptness of the proposed methodology.