Family name Kijjathorn (Kijjathorn 
) , in the entire world, is an extremely rare cognomen. The cognomen Kijjathorn is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Kijjathorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kijjathorn | Thailand |