Family name Rujirattanakul (Rujirattanakul 
) , in the entire world, is a very rare cognomen. The cognomen Rujirattanakul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rujirattanakul | Thailand |
Bhakaphong, and Phakkaphong