Family name Kijruangroj (Kijruangroj 
) , all around the world, is an extremely rare last name. The cognomen Kijruangroj is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kijruangroj | Thailand |
Pijitra, Wanchai, Mr. Wichit, and Pattamavadee