Family name Chownua (Chownua 
) , all around the world, is a very rare cognomen. The last name Chownua is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chownua | Thailand |
Munses, Oychai, Prutchwanwit, and Wachiraphong