Additive manufacturing (AM) is an emerging technology that is changing the supply chain’s structure in a context where consumers are looking for more diversified, customizable, and yet more environmentally friendly products and technologies. The literature suggests that AM technology improves the efficiency of a supply chain by contributing to waste reduction, elimination of many assembly steps, and less energy consumption, which in turn results in “leaner” and “greener” production processes. To further investigate such implications of AM technology, this study collects anecdotal evidence from research papers regarding the impact of AM on supporting four of the lean/green supply chain practices. As a result, a theoretical framework is developed; and in a final research stage, it is discussed in an interview with a company manager. This paper’s main contribution is to provide a theoretical and managerial perspective on how the AM technology can support lean/green supply chain practices helping to achieve a better supply chain performance.