Great Western Bank may refer to:
Great Western Bank (California), defunct bank headquartered in California and operational from 1919 to 1997 Great Western Bank (South Dakota), defunct bank headquartered in South Dakota and operational from 1907 to 2022 Great Western Bank and Trust, defunct bank headquartered in Arizona and operational from 1968 to 1986; owned by Citibank from 1986 to 1993, then acquired by Norwest