Dung, 48, has been its CEO and a member of the board since 2014.
Nguyen Thanh Tung, deputy director, temporarily takes over as CEO until a new person is appointed.
Dung has 27 years’ experience in the financial and banking industry.
He joined Vietcombank in 1994, and has served in various positions including deputy director of a financial division in Hong Kong and deputy director of the bank.
The previous chairman of the bank, Nghiem Xuan Thanh, was appointed the Secretary of the Party Committee of Hau Giang Province in early July.
Vietcombank is 74.8 percent owned by the government, 15 percent by Japan’s Mizuho Corporate Bank and the rest by other shareholders.