This report presents the outcomes of a prolonged dialogue with private sector investors in infrastructure, as part of a collaboration facilitated at the initiative of the G20 Infrastructure Working Group (IWG) under the Saudi G20 Presidency, supported by the OECD. It conveys a set of proposals, based on four events/seminars and numerous conference calls and interviews with institutional investors and asset managers, on ways to overcome the infrastructure investment gap and to mobilise higher levels of investment for quality infrastructure. It also conveys important insights into infrastructure in the context of the pandemic. The report was developed in consultation with G20 IWG and G20/OECD Task Force members and observers, who provided numerous comments on the report at meetings and in written form. The report is transmitted to the July 2020 meeting of G20 Finance Ministers and Central Bank Governors for their consideration.