Union Bank may refer to:
- Maritime features
- The Union Banks in South China Sea
- Banks
- Union Bank (Albania)
- Union Bank N.A. (previously Union Bank of California)
- Union Bank (Jordan), a bank in the Arab world
- Union Bank (Pakistan)
- Union Bank (Pembrokeshire)
- Union Bank (Tallahassee, Florida)
- MKB Unionbank, aka the 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 predecessor of UBS
- Union Bank of Taiwan
- The former Union Bank of Hong Kong
- The former Union Bank of New London, earliest predecessor of the Bank of New England
- The former Union Bank of Scotland, now part of the Bank of Scotland
- Union Bank & Trust Company of Nebraska
See also
- Union Bank Farm Halt railway station
- Union Bank F.C.
- Union Banking Corporation
