Family name พัวะ (Phua 
, พัวะ 
) , all over the world, is a common cognomen. The cognomen พัวะ is habitual in South-eastern Asia, particularly Singapore, where it is a common surname, Brunei, where it is quite a common surname, and Malaysia. Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Singapore, Malaysia, and Indonesia. Likewise, พัวะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phua | Indonesia, Taiwan, India, Singapore, Malaysia |
| พัวะ | Thailand |