How To Log In To Union Bank Online Banking

If you are a customer of Union Bank (formerly known as Union Bank of California or UBOC), you can log in to your online banking account at

The login page will look like this:

  • If you have not used Union Bank online banking previously, you can register here for a User ID and Password.
  • If you have forgotten your User ID or Password, go here for help.
  • If you are still having trouble logging on, the Union Bank customer service phone number to call is 800-238-4486.