Cognomen Chioo (Chioo 
) , in the world, is a rare last name. The surname Chioo is habitual in Myanmar, where it is a rare surname, Malaysia, and Nigeria, where it is an extremely rare surname. Much less frequently, Chioo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chioo | Malaysia, Mexico, Nigeria, India, Myanmar |