Surname Òo (Òo 
) , around the globe, is quite a rare last name. The cognomen Òo is habitual in Myanmar, where it is quite a rare surname, Egypt, where it is a very rare surname, and China, where it is an extremely rare surname. Also, Òo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Òo | China, Myanmar, Egypt |