Surname Guoba (Guoba 
) , worldwide, is a very rare family name. The last name Guoba is characteristic of Lithuania, where it is quite a rare surname, New Zealand, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is commonest in Lithuania, the United States, and New Zealand. Much less frequently, Guoba is the forename as well as the last name.