Family name Jantrujarnon (Jantrujarnon 
) , throughout the world, is an extremely rare cognomen. The cognomen Jantrujarnon is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jantrujarnon | Thailand |
Sukanat, Sukanet, and Suratchanon