The selection of providers with sustainability considerations is the most significant activity in contemporary supply chain operations. Using the MCDM (Multi-Criteria Decision Making) technique, vendors are chosen. By choosing the right sustainable supplier, the organizations can upgrade their products, decrease costs, and satisfying customers’ requirements. Dodla dairy is a renowned name in dairy companies in Hyderabad and Andhra Pradesh where purchasing managers choose the farmers. The purchasing managers gave their references so that the weights of the identified criterion and the ranking of another possibility on the basis of each criterion are to be determined. Quality and cost of the products are the most prominent criterion in the dairy supply chain. The method called Fuzzy TOPSIS is utilized in this paper to choose the dairy suppliers. The major goal of employing fuzzy logic is to assist purchasing managers in deciding how much importance to give each criterion and how to rank each sustainable dealer. The outcome of the Fuzzy TOPSIS technique, which has been successfully applied, establishes the weights of the criterion and the best and worst sustainable suppliers.