The goal of this study is to identify and evaluate key success factors (CSF) for unorganized retail supply chain management (UORSCM). The interpretative structural modelling (ISM) approach is applied for analyzing the CSFs. In India, the unorganized fast-moving consumer goods (FMCG) retail sector occupies a sizable amount of space and makes a significant GDP contribution. A total of 13 CSFs are analyzed, and to determine their driving and dependency power, MICMAC analysis is carried out. The outcome demonstrates that unorganized retailing suffers a variety of difficulties, like, the arrival of new competitors, product substitution, supplier problems, buyer threats, an increase in organized retailers, and co-manufacturer threats, in developing country settings. The factors with the highest positive impact are service quality in FMCG retail, time management at stores, product quality, and spoilage adjustment in retail. The factors, service quality in retail, time management at stores, and product quality have resulted in the highest driving power and lowest dependence power to attain the desired performance of UORSCM. The study’s findings also indicate that by focusing on these factors, unorganized retailers can efficiently handle customers.