Metals are a key resource in the modern world and are constantly being modified to meet new demands in every area of engineering and technology. Various types of metals, e.g. ferrous and non-ferrous, are commonly used in different applications depending on specific metals properties to fulfil desired requirements. This supplement will focus on highlighting eco-innovation opportunities along the metals value chain including fabrication, manufacturing, use and recycling (dashed lined in Figure 1). Though mining, refining, and metals processing will not be specifically addressed in this supplement, they are important in this context since they are linked to specific trends and related sustainability challenges relevant for the downstream metal value chain, e.g. raw material scarcity, energy intensity, working conditions in the extraction industry. Building on these principles and the methodology presented in the Eco-innovation Manual, this supplement provides specific information to advance eco-innovation with companies in this metal products’ value chain. It is complementary to the Eco-innovation Manual and not a stand-alone guide. Similar to the Eco-innovation Manual, this supplement makes use of a learning case study of a fictional company in a developing country, BikeBizz Co. to illustrate the implementation of the eco-innovation methodology and selected templates applicable to the metal value chain.