Seoul Bank, known from 1976 to 1995 as Seoul Trust Bank (서울신탁은행), was a major bank in South Korea, originally established as a regional bank in 1959. By the mid-1990s, it was one of the five most prominent Korean banks, together with Chohung Bank, Korea Commercial Bank, Korea First Bank, and Hanil Bank. It was determined to be insolvent during the 1997 Asian financial crisis, however, and was taken over by the Korean authorities, then merged into Hana Bank.