Purpose: The banking industry plays a crucial role in sustainable practices. One tool that can be used to manage sustainability practices is sustainability report. Various standards are available for preparing sustainability reports, including POJK 51, GRI, TCFD, CDP, and IFRS. This wide range of standards highlights the complexity of sustainability issues and the varying information needs of stakeholders. This study seeks to identify which standard is best suited for the banking industry, using Bank ABC as a case study. Research Methodology: This study adopted both qualitative and quantitative approaches. Data for this study were obtained from literature reviews, interviews, and questionnaire responses from the participants. The respondents in this study were responsible for preparing the sustainability reports at Bank ABC. To select the best standard, the author uses the Analytic Hierarchy Process (AHP) technique. Results: The best sustainability reporting standard used for banking in Indonesia was POJK 51 with a priority score of 42.66%. This result is likely because the bank's main priority is to comply with the regulations. The GRI standard received second priority with a score of 26,62%, and the SASB standard received third priority with a score of 8,5%. Limitations: The scope of this research is limited to Bank ABC as a case study. Contribution: This research can provide recommendations to the OJK to consider the use of the GRI standard or SASB as the sustainability reporting standard for the banking industry in Indonesia.