Family name Wannakua (Wannakua 
) , in all the world, is a very rare cognomen. The family name Wannakua is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wannakua | Thailand |
Suwan, Janwit, Surapee, Sudarat, and Ratchataporn