Abstract: The aim of this study is to analyse the specific part of Good Corporate Governance (GCG) practices between Indonesia and Thailand’s State-Owned Enterprises (SOEs) which listed in the Indonesia Stock Exchange (IDX) and Stock Exchange of Thailand (SET) by applying the ASEAN Corporate Governance Scorecard (ACGS) with focus on the Disclosures and Transparency (D&T) items. This study uses descriptive analysis approaches based on secondary data sources, namely the SOEs annual report in 2013 and the companie’s website. The research framework tools used in this study was taken from the ASEAN Corporate Governance Scorecard (ACGS) which was initiated and developed by the ASEAN Capital Markets Forum (ACMF). It found that in general Indonesia and Thailand SOEs have achieved a Good Corporate Governance (GCG) grades which score above 71%. Overall, Thailand listed SOEs have better performance againts Indonesia listed SOEs. However, both countries shared the similar poorly experience in terms of implementation in the disclosure of information regarding the directors/commissioners dealings in shares of the company and the disclosure of external auditor and auditor report’s fees.