Infrastructure investment is key to economic growth and yet the world is facing a widening infrastructure deficit. The existing pace of infrastructure development has been unable to meet the demands of a growing population. On the one hand it is positively influenced by globalization, higher literacy levels, digital transformation and economic and social initiatives to raise living standards; but, on the other hand, it is adversely impacted by climate change and the increased threat of natural and weather-related disasters. Investments in infrastructure will require a paradigm shift both in the mind-set and in the conception of developmental initiatives so that they are not viewed as the sole responsibility of the public sector but as a viable opportunity for the private sector to partner and share in its financial and social benefits. Global Best Practice Group’s expert was retained to research and develop a Green Finance Innovative Finance knowledge publication for the Asian Development Bank as a publicly available resource for leveraging public resources to catalyze private capital for climate resilient sustainable infrastructure. The knowledge product, Reinvigorating Financial Approaches for Sustainable and Resilient Infrastructure in ASEAN+3, provides an overview of the infrastructure financing outlook and infrastructure financing needs and gaps assessment in SE Asia and the Pacific. It not only highlights the growing infrastructure and resource requirements, but also shares ingenious financial approaches that have been adopted in different geographies. It fulfills the need for a knowledge product that creates awareness on structuring project financing, strategic use of public funds, de-risking of investments and creating a green investment-enabled environment. A cross-section of global innovative financing mechanisms, both existing and evolving, ranging from blended finance structures to bonds are included, together with case studies, to illustrate how traditional financing systems have been remodeled to achieve project objectives and can be utilized to bridge the infrastructure gap.