In order to make a manufacturing system sustainable, it is crucial to integrate sustainability practices across the whole supply chain and the production process. It is in demand in today's industrial sector, especially in developing nations like Bangladesh, which has an emerging economy. The most important economic, environmental, and social assessment criteria for choosing sustainable suppliers will be identified through a thorough literature analysis and expert input. The Stepwise Weight Assessment Ratio Analysis (SWARA) method will be used to determine the weights of the selected evaluation criteria. The ultimate ranking of suppliers in the agro-food industry will then be determined using the fuzzy topsis approach, utilizing the criterion weight from the SWARA method. This study is anticipated to help decision-makers in the agro-food sectors of developing nations choose suppliers who are both long-term economically and ecologically sustainable.