The research aims to analyze the mergers that the Indonesian government of Islamic banks has carried out and to explore the potential for future Islamic bank mergers. The method used in this research is quantitative, supported by secondary data obtained from bank financial statements and also based on previous studies. The findings of this study are that the merger of Bank Syariah Indonesia (BSI) has not optimally improved the profitability, productivity, and efficiency aspects of the bank. Therefore, it is necessary to monitor and re-evaluate the internal conditions of the merged bank, which aims to optimize its resources to provide maximum added value. In addition, the merger plan between the Sharia business unit (UUS)-BTN and Bank Muamalat Indonesia needs to be studied in depth and comprehensively and not in a hurry so that the merger action can have a positive impact on both internal Islamic banks and the community and other stakeholders as external parties. The implication of this research is to provide references and information about merger events that occur and the potential for mergers in Islamic banks in Indonesia to stakeholders, both practitioners and academics. Novelty research related to the impact of mergers and potential mergers of Islamic banks in Indonesia is still limited, especially based on the perspectives of profitability, productivity, and efficiency.