Family name Chitbamrungchai (Chitbamrungchai 
) , in the world, is a very rare cognomen. The last name Chitbamrungchai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chitbamrungchai | Thailand |
Nithas, and Rungrattekan