The purpose of reverse logistics is recapturing value or proper disposal. However, many companies suffer significantly from poor management of returned products. According to a recent article published in CNBC by the end of 2016, only the returns cost businesses more than $260 billion a year and an average profit loss of 10%. The scarcity of natural resources, green legislation, recognition of reverse-flow value, e-business, good image, customer satisfaction, and information systems have forced companies to better handle of their returns (e.g. commercial returns, warranty returns, lease returns, reusable articles, product recalls, end-of-use returns (EOU) and end-of-life returns (EOL)). Therefore, an appropriate platform for an effective and efficient reverse logistics implementation is urgently required. Social commerce, which is a new business model of e-commerce that makes use of Web 2.0 technologies and social media, support social-related exchange activities by providing a platform that connects consumers, companies, activists, legislators, and the like. Social commerce is not solely for generating more income. As a matter of fact, social commerce is more for engaging customers not only for their shopping thoughts and experiences, but engage in product design, and environmental issues. Firms, through reverse logistics initiatives with social commerce can not only create new sources for revenue but also show corporate social responsibility by increasing their commitment to social, green, and environmental responsibilities. Therefore, a growing number of companies are attempting to streamline the reverse logistics process into social commerce platforms. Thus, the purpose of this dissertation is: to first identify the criteria that should be used in designing and evaluating social commerce for helping companies to better manage their reverse logistics. Then, I will use identified criteria to evaluate the reverse logistics practices of three major global firms (COMPANY A, COMPANY B, COMPANY C). To achieve the main objective of this dissertation, I propose three key questions: (1) What components need to be included in a social commerce design framework? (2) How formalize the reverse logistics processes for companies? (3) How evaluate companies' reverse logistics performances in their social commerce platforms? To answer the interrelated research questions, this Ph.D. thesis has been developed through a variety of methods: taxonomic literature review approach, case study method, Fuzzy TOPSIS and software tool FLINTSTONES. Results include implications for both managers and academics, not only future direction for social commerce and reverse logistics, but also in an inductive manner, about the adjustment of Managing Reverse logistics in social commerce platforms: Theory, methods and applications vi influenced factor (four main criteria and sixteen sub-criteria) for reverse logistics practices in social commerce platforms.