Union Bank kan referere til følgende banker:
Union Bank N.A. (tidligere Union Bank of California) Union Bank (Jordan) Union Bank (Pakistan) Union Bank (Pembrokeshire) Union Bank (Tallahassee, Florida) Union Bank of Bulgaria Union Bank of Australia Union Bank of Halifax Union Bank of India Union Bank of Israel Union Bank of London Union Bank of Nigeria Union Bank of Norway Union Bank of the Philippines Union Bank of Switzerland, a forgængere for UBS Den forhenværende Union Bank of Hong Kong Union Bank & Trust Company of Nebraska Union-Bank AG, en regional bank i Flensborg, Tyskland
Se også Union Bank F.C. - Nigeriansk fodboldklub