Family name Janchawna (Janchawna 
) , in the world, is a very rare cognomen. The surname Janchawna is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Janchawna | Thailand |
Jeera, Nattapon, Auttakorn, Kanjanaporn, and Ratchadaporn