The objective of the International Symposium on Feedstock Recycling of Polymeric Materials (ISFR) is providing common platform for sharing the latest developments and exchange of ideas from both scientific and technological points of view. The current scenario of the different processes for the valorisation of polymeric residues (waste plastics, e-waste, biomass, etc.) by their transformation into raw chemicals, fuels, commercial products and/or energy using the thermo-catalytic, chemical and biochemical methods will be discussed. These methods are expected to be highly energy efficient and eco-friendly while providing an attractive profitability that may allow the modern societies to successfully manage the huge and increasing amounts of polymeric wastes that is generated. Moreover the symposium is a great platform to establish new contacts for future cooperation and present results of their research activities.