Corporate Governance (CG) principles provide guidance on how corporations should operate. Adoption of international CG best practices leads to long-term sustainability and resilience, and can be a competitive tool to attract foreign investments. The Asian Development Bank in partnership with the ASEAN Capital Markets Forum have jointly developed the ASEAN Corporate Governance Scorecard, an assessment based on publicly available information and benchmarked against international best practices that encourage publicly listed companies to go beyond national legislative requirements. This report can be used by capital market regulators and other stakeholders as a reference to understand the current CG standards across the region. It is also a useful diagnostic tool to guide improvement of CG standards.