The message is by now clear: our global economy must be fundamentally reoriented and redeployed in order to achieve the SDGs and the commitments of the Paris Climate Agreement. This requires action by all stakeholders, including non-financial and financial firms, debt and equity investors, government policymakers, and consumers. In terms of the amount of money required, it has been estimated that meeting the SDGs will require US $5-7 trillion annually, with investment needs for developing countries amounting to roughly US $3.3-4.5 trillion per year. While a big picture view of and strategic thinking regarding the entire economic ecosystem is necessary to generate such investments, this paper, produced in conjunction with the UN Inquiry into the Design of a Sustainable Financial System, focuses on the actual and potential role of one type of financial flow—FDI—in achieving the transition to a low-carbon, just and sustainable world and, more specifically, FDI flows into developing countries. The paper is available for download from the Columbia Center on Sustainable Investment website.