Family name オ (O 
, オ , Ó 
) , globally, is a widespread surname. The surname オ is habitual in Venezuela, where it is a common surname, Vanuatu, where it is quite a common surname, and Myanmar (explore the name in all countries). Not in comparison with a country's population, the name is most common in China, Indonesia, and Venezuela. Likewise, オ is the forename as well as the last name.