Last name Putthajuk (Putthajuk 
) , in the entire world, is an extremely rare family name. The cognomen Putthajuk is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Putthajuk | Thailand |
Pimon, Jamsai, Kochaporn, and Kotchaporn