Cognomen وا (Wa 
, هوا 
, وا ) , around the world, is a common last name. The last name وا is characteristic of Macao, where it is quite a common surname, Tunisia, and Hong Kong (explore the name in all countries). In absolute terms, it is commonest in Myanmar, Egypt, and Indonesia. More frequently, وا is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wa | Algeria, Myanmar, China, Japan, Indonesia |
| هوا, هواء | Sudan, Saudi Arabia, Libya, Egypt, Iraq |
| وا | Algeria, Sudan, Saudi Arabia, Egypt, Iraq |