MUFG Bank, Ltd. is a Japanese bank and the core banking subsidiary of the Mitsubishi UFJ Financial Group (MUFG). It was established on January 1, 2006 through the merger of The Bank of Tokyo-Mitsubishi and UFJ Bank, two major banking groups that themselves were the product of banking mergers. The bank was first named Bank of Tokyo Mitsubishi UFJ (BTMU) before rebranding as MUFG Bank in July 2018.