Union Bank was an American national bank with 398 branches in California, Washington and Oregon. It was owned by MUFG Americas Holdings Corporation and was acquired by U.S. Bancorp in December 2022. It was headquartered in New York City and had commercial branches in Dallas, Houston, New York and Chicago, in addition to two international offices.

U.S. Bancorp is an American bank holding company based in Minneapolis, Minnesota, and incorporated in Delaware. It is the parent company of U.S. Bank National Association, and is the fifth largest banking institution in the United States. The company provides banking, investment, mortgage, trust, and payment services products to individuals, businesses, governmental entities, and other financial institutions. As of 2019, it had 3,106 branches and 4,842 automated teller machines, primarily in the Western and Midwestern United States. In 2023 it ranked 149th on the Fortune 500, and it is considered a systemically important bank by the Financial Stability Board. The company also owns Elavon, a processor of credit card transactions for merchants, and Elan Financial Services, a credit card issuer that issues credit card products on behalf of small credit unions and banks across the U.S.