芝加哥第一银行（Bank One Corporation）是美国一间银行，为美国第六大银行，前身由俄亥俄州第一银行（Bank one of Ohio）和First Chicago NBD组成，美国联邦储备委员会于2004年6月14日批准摩根大通公司兼并第一银行公司，两家公司合而为一组成资产总额达1.1万亿美元的美国第二大银行。

Bank One Corporation was the sixth-largest bank in the United States. It traded on the New York Stock Exchange under the stock symbol ONE. The company merged with JPMorgan Chase & Co. on July 1, 2004. The company had its headquarters in the Bank One Plaza (now the Chase Tower) in the Chicago Loop in Chicago, Illinois, now the headquarters of Chase's retail banking division.