Cognomen จารุชัย (จารุชัย 
, Jaruchai 
) , worldwide, is a rare last name. The surname จารุชัย is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, จารุชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จารุชัย | Thailand |
| Jaruchai | Thailand, United States |