Cognomen ชัยอรุณ (ชัยอรุณ 
, Chaiparun , Chaiaroon 
) , in the world, is a rare last name. The cognomen ชัยอรุณ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, ชัยอรุณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ชัยอรุณ, Chaiparun | Thailand |
| Chaiaroon | United States, Thailand |
Chaiarun, Chaijarun, Chainaroong, Chainarun, and Chayrun