Over recent decades, the area of marketing interorganizational relationships (IORs) has received increasing attention from both academics and practitioners, even if a comprehensive portrayal of past research is still lacking. Hence, the aim of the present paper is to review the literature on marketing IORs in order to develop a framework meant to organize the different contributions in this area and suggest new paths for future research. The analysis suggests that three main streams of research can be identified with regard to the type of relationship between variables investigated by each article. Moreover, taking into account the purpose of the IOR, common patterns within each stream may be identified. A critical analysis of articles grounded on both the streams and the purpose of marketing IORs suggests there are still substantial gaps in knowledge, which open new paths for future research regarding both methodological issues and hot topics.