This research discusses the obligation of Regional Development Bank (RDB) as a Regionally-Owned Enterprises (ROE) to implement Good Corporate Governance (GCG). In particular, this research analyzes the forms of transparency principle on RDB, specifically on PT Bank Pembangunan Daerah Jawa Timur Tbk (Bank Jatim) according to existing regulations. By using legal normative method, this thesis concludes that in principle, the forms of transparency principle on BPD is divided into three parts, namely preparing reports, publishing them, and ensuring that they are publicly accessible. There are at least 8 (eight) forms of transparency principle, they are monthly report, quarterly report, annual report, prime lending rate report, report on material information or facts information regarding bank’s product and use of customer’s data, and GCG report. For RDB in the forms of Public Company, it is also obligated to make summary of general meeting of shareholders’ minutes of meeting and information on communication with shareholder and investor