Cognomen ว. (Wo 
, ว. 
) , around the world, is a common surname. The cognomen ว. is habitual in Hong Kong, where it is quite a common surname, Macao, and Malaysia, where it is quite a rare surname. In absolute terms, the name is most common in China, Indonesia, and Hong Kong. Likewise, ว. is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wo | Hong Kong, Myanmar, Indonesia, Malaysia, China |
| ว. | Thailand |