Between 2010 to 2020, Asia needs to invest a total of around US$8 trillion in overall national infrastructure and an additional US$287 billion in specific regional infrastructure projects. Financing such national and cross-border infrastructure projects for economic integration in the Asia-Pacific region is challenging and complicated. In general, there are several sources of infrastructure finance — Government Budget, Multilateral Development Banks, Commercial Bank Credit, Capital Markets, Sovereign Wealth Funds and Public-Private-Partnership. But each of these has its own features and certain limitations. While national government budgets will continue to be the mainstay for financing infrastructure, it will need to be supplemented by Multilateral Development Banks in the future. Asian governments must put their collective work to mobilize their large pool of savings for regional infrastructure investments. Strengthening national and regional bond markets — through vehicles like the Asian Bond Market Initiative and the Asian Bond Funds — is one of the few steps in narrowing the infrastructure financing gap. The Asian region's forex reserve, including those in the Sovereign Wealth Funds, could also play an important role. Public-Private Partnership may play a bigger role in the near future. What is needed is substantial work to address the challenges to build and implement the PPP models. Asian governments need to act together and develop “bankable” projects for attracting the private sector.