Abstract. Reverse logistics deals with the processes associated with the flows of products, components and materials from users/owners to re-users. This paper provides a review and content analysis of more than sixty case studies on reverse logistics. The case studies deal with issues such as the structure of the networks, the relationships between the different parties involved on the networks, inventory management, planning and control, and information technology. The analysis concerns the following questions: what is returned, why do these return flows exists, i.e. what are the drivers/reasons for these flows, how are these return flows being recovered, and finally, who is involved? We end with a summary and suggestions for further research.