MUFG Bank
is a Japanese bank and the core banking subsidiary of the Mitsubishi UFJ Financial Group. It was established on January 1, 2006 through the merger of and, two major banking groups that themselves were the product of banking mergers. The bank was first named Bank of Tokyo Mitsubishi UFJ before rebranding as MUFG Bank in July 2018.
MUFG Bank, along with Sumitomo Mitsui Banking Corporation and Mizuho Bank, is recognized as one of the three so-called megabanks in Japan. As of June 23, 2019, it was ranked as the largest bank in Japan and the third largest in the world.
The bank's head office is in Marunouchi, Chiyoda, Tokyo, and it has 772 other offices in Japan and 76 offices overseas.
In 2025, the bank reported total assets approaching USD 2.7 trillion, placing it among the world’s major financial institutions. Its capital alone is approximately JPY 17 trillion. The institution is recognized as one of Japan’s flagship banks.
It also holds 23.3% stake in the U.S.-based Morgan Stanley as its largest shareholder.
In the domain of investment banking and M&A, the bank’s group collaborates with Morgan Stanley’s securities arm so as to offer integrated bank‐and‐securities services, introducing Morgan Stanley to its corporate clients and facilitating both domestic Japanese and global M&A and business succession transactions.
In December 2025, it was announced that MUFG Bank had agreed to acquire a 20% equity stake in India-based non-banking financial company Shriram Finance through a preferential allotment. The investment, valued at approximately US$4.3 billion, was subject to regulatory approvals and would result in Shriram Finance becoming an equity-method affiliate of Mitsubishi UFJ Financial Group.